var glossary = {
	categories: [
		"Eye Anatomy/Conditions",
		"Eye Testing/Instruments",
		"Visual Correction/Eyewear",
		"Vision Benefit Terms"  		
	],
	terms: [
		{
			title: "AFTER-CATARACT, SECONDARY CATARACT",
			definition: "Remnants of an opaque lens remaining in the eye, or opacities forming, after extracapsular cataract removal.",
			category: 0
		},
		{
			title: "AGE-RELATED MACULAR DEGENERATION (AMD)",
			definition: "Group of conditions that include deterioration of the macula, resulting in loss of sharp central vision.  Two general types: \"dry,\" which is more common, and \"wet,\" in which abnormal new blood vessels grow under the retina and leak fluid and blood (neovascularization), further disturbing macular function.  Most common cause of decreased vision after age 60.",
			phonetic: "ARMDMAK-yu-lur",
			category: 0
		},
		{
			title: "AMBLYOPIA",
			definition: "Also known as \"lazy eye\".  Decreased vision in one or both eyes without detectable anatomic damage in the eye or visual pathways.  Usually uncorrectable by eyeglasses or contact lenses.  Amblyopia can be prevented through early diagnosis and treatment.",
			phonetic: "am-blee-OH-pee-uh",
			category: 0
		},
		{
			title: "ANGLE, ANTERIOR CHAMBER ANGLE",
			definition: "Junction of the front surface of the iris and back surface of the cornea, where aqueous fluid filters out of the eye.",
			category: 0
		},
		{
			title: "ANISOMETROPIA",
			definition: "A condition in which the eyes have unequal refractive power.",
			phonetic: "an-i\" so-me-tro' pe-ah",
			category: 0
		},
		{
			title: "ANTERIOR CHAMBER",
			definition: "Fluid-filled space inside the eye between the iris and the innermost corneal surface (endothelium).",
			category: 0
		},
		{
			title: "APHAKIA ",
			definition: "Absence of the eye's crystalline lens, such as after cataract extraction.",
			phonetic: "ay-FAY-kee-uh",
			category: 0
		},
		{
			title: "AQUEOUS, AQUEOUS HUMOR",
			definition: "Clear, watery fluid that fills the space between the back surface of the cornea and the front surface of the vitreous, bathing the lens.  Produced by the ciliary processes.  Nourishes the cornea, iris, and lens and maintains intraocular pressure.",
			phonetic: "AY-kwee-us",
			category: 0
		},
		{
			title: "ASTHENOPIA",
			definition: "Vague eye discomfort arising from use of the eyes; may consist of eyestrain, headache, and/or browache.  May be related to uncorrected refractive error or poor fusional amplitudes.",
			phonetic: "as-then-OH-pee-uh",
			category: 0
		},
		{
			title: "ASTIGMATISM  ",
			definition: "Optical defect in which refractive power is not uniform in all directions (meridians).  Light rays entering the eye are bent unequally by different meridians, which prevent formation of a sharp image focus on the retina.  Slight uncorrected astigmatism may not cause symptoms, but a large amount may result in significant blurring and headache.",
			phonetic: "uh-STIG-muh-tiz-um",
			category: 0
		},
		{
			title: "BACKGROUND RETINOPATHY",
			definition: "See Diabetic Retinopathy.",
			category: 0
		},
		{
			title: "BLEPHARITIS",
			definition: "Inflammation of the eyelids, usually with redness, swelling, and itching.",
			phonetic: "blef-uh-RI-tus",
			category: 0
		},
		{
			title: "BLIND SPOT",
			definition: "Sightless area within the visual field of a normal eye. Caused by absence of light sensitive photoreceptors where the optic nerve enters the eye.",
			category: 0
		},
		{
			title: "CATARACT",
			definition: "Opacity or cloudiness of the crystalline lens, which may prevent a clear image from forming on the retina.  Surgical removal of the lens may be necessary if visual loss becomes significant, with lost optical power replaced with an intraocular lens, contact lens, or aphakic spectacles. May be congenital or caused by trauma, disease, or age.",
			category: 0
		},
		{
			title: "CENTRAL RETINAL ARTERY",
			definition: "First branch of the ophthalmic artery; supplies nutrition to the inner two-thirds of the retina.",
			category: 0
		},
		{
			title: "CENTRAL RETINAL VEIN",
			definition: "Blood vessel that collects retinal venous blood drainage; exits the eye through the optic nerve.",
			category: 0
		},
		{
			title: "CENTRAL VISION",
			definition: "An eye's best vision; used for reading and discriminating fine detail and color.  Results from stimulation of the fovea and the macular area.",
			category: 0
		},
		{
			title: "CHOROID",
			definition: "Vascular (major blood vessel) layer of the eye lying between the retina and the sclera.  Provides nourishment to outer layers of the retina.",
			phonetic: "KOR-oyd",
			category: 0
		},
		{
			title: "COLOR BLINDNESS",
			definition: "Reduced ability to discriminate between colors, especially shades of red and green.  Usually hereditary.",
			category: 0
		},
		{
			title: "CONE",
			definition: "Light-sensitive retinal receptor cell that provides sharp visual acuity and color discrimination.",
			category: 0
		},
		{
			title: "CONJUNCTIVA",
			definition: "Transparent mucous membrane covering the outer surface of the eyeball except the cornea, and lining the inner surface of the eyelids.",
			phonetic: "kahn-junk-TI-vuh",
			category: 0
		},
		{
			title: "CONJUNCTIVITIS",
			definition: "Also known as \"pink eye\".  Inflammation of the conjunctiva.  Characterized by discharge, grittiness, redness and swelling.  Usually viral in origin, but may be bacterial or allergic; may be contagious.",
			phonetic: "kun-junk-tih-VI-tis",
			category: 0
		},
		{
			title: "CONVERGENCE",
			definition: "Inward movement of both eyes toward each other, usually in an effort to maintain single binocular vision as an object approaches.",
			category: 0
		},
		{
			title: "CORNEA ",
			definition: "Transparent front part of the eye that covers the iris, pupil, and anterior chamber and provides most   of an eye's optical power.",
			phonetic: "KOR-nee-uh",
			category: 0
		},
		{
			title: "CROSSED-EYES",
			definition: "See Esotropia.",
			category: 0
		},
		{
			title: "CRYSTALLINE LENS",
			definition: "The eye's natural lens.  Transparent, biconvex intraocular tissue that helps brings rays of light to a focus on the retina.",
			category: 0
		},
		{
			title: "DIABETIC RETINOPHATHY",
			definition: "Spectrum of retinal changes accompanying long-standing diabetes mellitus.  Early stage is background retinopathy or nonproliferative (NPDR).  May advance to proliferative retinopathy (PDR), which includes the growth of abnormal new blood vessels (neovascularization) and fibrous tissue.",
			phonetic: "ret-in-AHP-uh-thee",
			category: 0
		},
		{
			title: "DIPLOPIA",
			definition: "Double vision.",
			phonetic: "di-ploh-pee-uh",
			category: 0
		},
		{
			title: "DRUSEN",
			definition: "Tiny, white hyaline deposits on Bruch's membrane (of the retinal pigment epithelium).  Common after age 60; sometimes an early sign of macular degeneration.",
			phonetic: "DRU-zin",
			category: 0
		},
		{
			title: "DRY EYE SYNDROME",
			definition: "Corneal and conjunctival dryness due to deficient tear production, predominantly in menopausal and post-menopausal women.  Can cause foreign body sensation, burning eyes, filamentary keratitis, and erosion of conjunctival and corneal epithelium.",
			category: 0
		},
		{
			title: "ECTROPION",
			definition: "Outward turning of the upper or lower eyelid so that the lid margin does not rest against the eyeball, but falls or is pulled away.  Can create corneal exposure with excessive drying, tearing, and irritation.  Usually from aging.",
			phonetic: "ek-TROH-pee-un",
			category: 0
		},
		{
			title: "EMMETROPIA",
			definition: "Refractive state of having no refractive error when accommodation is at rest.  Images of distant objects are focused sharply on the retina without the need for either accommodation or corrective lenses.",
			phonetic: "em-uh-TROH-pee-uh",
			category: 0
		},
		{
			title: "ENTROPION",
			definition: "Inward turning of upper or lower eyelid so that the lid margin rests against and rubs the eyeball.",
			phonetic: "en-TROH-pee-un",
			category: 0
		},
		{
			title: "ESOPHORIA",
			definition: "A tendency of one eye to turn inward.",
			phonetic: "es\" o-fo' re ah",
			category: 0
		},
		{
			title: "ESOTROPIA",
			definition: "Also known as \"crossed eyes\".  Eye misalignment in which one eye deviates inward (toward nose) while the other fixates normally.",
			phonetic: "ee-soh-TROH-pee-uh",
			category: 0
		},
		{
			title: "EXOPHORIA",
			definition: "A tendency of one eye to turn outward.",
			category: 0
		},
		{
			title: "EXOTROPIA",
			definition: "Also known as \"wall-eyes\".  Eye misalignment in which one eye deviates outward (away from nose) while the other fixates normally.",
			phonetic: "eks-oh-TROH-pee-uh",
			category: 0
		},
		{
			title: "EXTRAOCULAR MUSCLES",
			definition: "Six muscles that move the eyeball (lateral rectus, medial rectus, superior oblique, inferior oblique, superior rectus, inferior rectus).",
			phonetic: "eks-truh-AHK-yu-lur",
			category: 0
		},
		{
			title: "EYELIDS",
			definition: "Structures covering the front of the eye, which protect it, limit the amount of light entering the pupil, and distribute tear film over the exposed corneal surface.",
			category: 0
		},
		{
			title: "FARSIGHTEDNESS",
			definition: "See Hyperopia.",
			category: 0
		},
		{
			title: "FLOATERS",
			definition: "Particles that float in the vitreous and cast shadows on the retina; seen as spots, cobwebs, spiders, etc.  Occurs normally with aging or with vitreous detachment, retinal tears, or inflammation.",
			category: 0
		},
		{
			title: "FOVEA",
			definition: "Central pit in the macula that produces sharpest vision.  Contains a high concentration of cones and no retinal blood vessels.",
			phonetic: "FOH-vee-uh",
			category: 0
		},
		{
			title: "FUNDUS ",
			definition: "Interior posterior surface of the eyeball; includes retina, optic disk, macula, posterior pole.  Can be seen with an ophthalmoscope.",
			category: 0
		},
		{
			title: "GLAUCOMA ",
			definition: "A group of diseases that can damage the eye's optic nerve and result in vision loss and blindness.  Although glaucoma usually occurs when the normal fluid pressure inside the eyes slowly rises, but it may also occur with eyes that have \"normal\" pressure.  Treatment is aimed at halting loss of vision with prescription medications, laser treatment, or surgery.",
			phonetic: "glaw-KOH-muh",
			category: 0
		},
		{
			title: "HETEROPHORIA",
			definition: "The tendency of one eye to deviate from one direction to another due to an imbalance.",
			phonetic: "het\" er-o-tro' pe-ah",
			category: 0
		},
		{
			title: "HYPEROPIA",
			definition: "Also known as \"farsightedness\".  Focusing defect in which an eye is underpowered.  Thus light rays coming from a distant object strike the retina before coming to sharp focus, blurring vision. Corrected with additional optical power, which may be supplied by a plus lens (spectacle or contact) or by excessive use of the eye's own focusing ability (accommodation).",
			phonetic: "hi-pur-OH-pee-uh",
			category: 0
		},
		{
			title: "HYPHEMA",
			definition: "Blood in the anterior chamber, such as following blunt trauma to the eyeball.",
			phonetic: "hi-FEE-muh",
			category: 0
		},
		{
			title: "IRIS",
			definition: "Pigmented tissue lying behind the cornea that gives color to the eye (e.g., blue eyes) and controls amount of light entering the eye by varying the size of the pupillary opening.",
			category: 0
		},
		{
			title: "KERATOCONUS",
			definition: "Degenerative corneal disease affecting vision.  Characterized by generalized thinning and cone-shaped protrusion of the central cornea, usually in both eyes.  Hereditary.",
			phonetic: "kehr-uh-toh-KOH-nus",
			category: 0
		},
		{
			title: "LACRIMAL GLAND",
			definition: "Almond-shaped structure that produces tears. Located at the upper outer region of the orbit, above the eyeball.",
			category: 0
		},
		{
			title: "\"LAZY EYE\"",
			definition: "See Amblyopia.",
			category: 0
		},
		{
			title: "L.E./Left Eye",
			definition: "See O.S.",
			category: 0
		},
		{
			title: "LEGAL BLINDNESS",
			definition: "Best-corrected visual acuity of 20/200 or less, or reduction in visual field to 20\" or less, in the better seeing eye.",
			category: 0
		},
		{
			title: "LOW VISION",
			definition: "Term usually used to indicate vision of less than 20/200.",
			category: 0
		},
		{
			title: "MACULA",
			definition: "Small central area of the retina surrounding the fovea; area of acute central vision.",
			category: 0
		},
		{
			title: "MACULAR DEGENERATION",
			definition: "See \"Age-Related Macular Degeneration\".",
			category: 0
		},
		{
			title: "MYOPIA",
			definition: "Also known as \"nearsightedness\".  Focusing defect in which the eye is overpowered.  Light rays coming from a distant object are brought to focus in front of the retina.  Requires a minus lens correction to \"weaken\" the eye optically and permit clear distance vision.",
			phonetic: "mi-OH-pee-uh",
			category: 0
		},
		{
			title: "NEARSIGHTEDNESS",
			definition: "See Myopia.",
			category: 0
		},
		{
			title: "NEOVASCULARIZATION",
			definition: "Abnormal formation of new blood vessels, usually in or under the retina or on the iris surface.  May develop in diabetic retinopathy, blockage of the central retinal vein, or macular degeneration.",
			phonetic: "nee-oh-VAS-kyu-lur-ih-ZAY-shun",
			category: 0
		},
		{
			title: "NYSTAGMUS",
			definition: "Involuntary, rhythmic side-to-side or up and down (oscillating) eye movements.",
			phonetic: "ni-STAG-mus",
			category: 0
		},
		{
			title: "O.D. /Right Eye",
			definition: "Oculus Dexter (Latin)",
			category: 0
		},
		{
			title: "O.S./Left Eye",
			definition: "Oculus Sinister (Latin)",
			category: 0
		},
		{
			title: "O.U./Oculi Uterque (Latin)",
			definition: "Both eyes",
			category: 0
		},
		{
			title: "OPTIC DISC, OPTIC NERVE HEAD",
			definition: "Ocular end of the optic nerve.  Denotes the exit of retinal nerve fibers from the eye and entrance of blood vessels to the eye.",
			category: 0
		},
		{
			title: "OPTIC NERVE  ",
			definition: "Largest sensory nerve of the eye; carries impulses for sight from the retina to the brain.",
			category: 0
		},
		{
			title: "PERIPHERAL VISION",
			definition: "Side vision; vision elicited by stimuli falling on retinal areas distant from the macula.",
			category: 0
		},
		{
			title: "PHOTOPHOBIA",
			definition: "Abnormal sensitivity to, and discomfort from, light. May be associated with excessive tearing. Often due to inflammation of the iris or cornea.",
			phonetic: "foh-toh-FOH-bee-uh",
			category: 0
		},
		{
			title: "PINGUECULA",
			definition: "Yellowish-brown subconjunctival elevation composed of degenerated elastic tissue; may occur on either side of the cornea. Benign.",
			phonetic: "pin-GWEK-yu-luh",
			category: 0
		},
		{
			title: "\"PINK EYE\"",
			definition: "See Conjunctivitis.",
			category: 0
		},
		{
			title: "PRESBYOPIA",
			definition: "The gradual loss of the ability to focus at close objects with advancing age.  This makes reading difficult.  Onset usually occurs between the ages of 40 and 45 years of age.",
			phonetic: "prez-bee-OH-pee-uh",
			category: 0
		},
		{
			title: "PROLITERATIVE RETINOPATHY",
			definition: "See Diabetic Retinopathy.",
			category: 0
		},
		{
			title: "PTOSIS",
			definition: "Drooping of upper eyelid. May be congenital or caused by paralysis or weakness of the 3rd cranial nerve or sympathetic nerves, or by excessive weight of the upper lids.",
			phonetic: "TOH-sis",
			category: 0
		},
		{
			title: "PUPIL",
			definition: "Variable-sized black circular opening in the center of the iris that regulates the amount of light that enters the eye.",
			category: 0
		},
		{
			title: "R.E./Right Eye",
			definition: "See O.D.",
			category: 0
		},
		{
			title: "REFRACTIVE ERROR",
			definition: "Imperfect refractive powers of the eyes as in astigmatism, myopia, or hyperopia.",
			category: 0
		},
		{
			title: "RETINA",
			definition: "Light sensitive nerve tissue in the eye that converts images from the eye's optical system into electrical impulses that are sent along the optic nerve to the brain. Forms a thin membranous lining of the rear two-thirds of the globe.",
			phonetic: "RET-ih-nuh",
			category: 0
		},
		{
			title: "RETINAL DETACHMENT",
			definition: "Separation of the retina from the underlying pigment epithelium. Disrupts visual cell structure and thus markedly disturbs vision. Almost always caused by a retinal tear; often requires immediate surgical repair.",
			category: 0
		},
		{
			title: "ROD",
			definition: "Light-sensitive, specialized retinal receptor cell that works at low light levels (night vision). A normal retina contains 150 million rods.",
			category: 0
		},
		{
			title: "SCHLEMM'S CANAL",
			definition: "Circular channel deep in corneoscleral junction (limbus) that carries aqueous fluid from the anterior chamber of the eye to the bloodstream.",
			phonetic: "shlemz",
			category: 0
		},
		{
			title: "SCLERA",
			definition: "Opaque, fibrous, protective outer layer of the eye (\"white of the eye\") that is directly continuous with the cornea in front and with the sheath covering optic nerve behind.",
			phonetic: "SKLEH-ruh",
			category: 0
		},
		{
			title: "SCOTOMA",
			definition: "A blind area in the visual field.",
			phonetic: "sko-to' mah",
			category: 0
		},
		{
			title: "STRABISMUS",
			definition: "Also known as \"crossed'eyes\".  Eye misalignment caused by extraocular muscle imbalance: one fovea is not directed at the same object as the other.",
			phonetic: "struh-BIZ-mus",
			category: 0
		},
		{
			title: "STY, STYE",
			definition: "An infection of one of the sebaceous glands of the eyelid.",
			category: 0
		},
		{
			title: "SUBNORMAL OR LOW VISION",
			definition: "Term usually used to indicate vision of less than 20/200.",
			category: 0
		},
		{
			title: "TRABECULAR MESHWORK",
			definition: "Mesh-like structure inside the eye at the iris-scleral junction of the anterior chamber angle. Filters aqueous fluid and controls its flow into the canal of Schlemm, prior to its leaving the anterior chamber.",
			phonetic: "truh-BEK-yu-lur",
			category: 0
		},
		{
			title: "UVEA, UVEAL TRACT",
			definition: "Pigmented layers of the eye (iris, ciliary body, choroid) that contain most of the intraocular blood vessels.",
			phonetic: "YU-vee-uh",
			category: 0
		},
		{
			title: "VISION",
			definition: "Sense by which light and color are apprehended; sight.",
			category: 0
		},
		{
			title: "VITREOUS",
			definition: "Also known as vitreous humor.  Transparent, colorless gelatinous mass that fills the rear two-thirds of the eyeball, between the lens and the retina.",
			phonetic: "VIT-ree-us",
			category: 0
		},
		{
			title: "VITREOUS DETACHMENT ",
			definition: "Separation of vitreous gel from retinal surface. Usually innocuous, but can cause retinal tears, which may lead to retinal detachment. Frequently occurs with aging as the vitreous liquifies, or in some disease states, e.g. diabetes and high myopia.",
			category: 0
		},
		{
			title: "ZONULES",
			definition: "Anatomy. Radially arranged fibers that suspend the lens from the ciliary body and hold it in position.",
			phonetic: "ZAHN-yoolz",
			category: 0
		},
		{
			title: "ACCOMODATION",
			definition: "Increase in optical power by the eye in order to maintain a clear image (focus) as objects are moved closer.  Occurs through a process of ciliary muscle contraction and zonular relaxation that causes the elastic-like lens to \"round up\" and increase its optical power.  Natural loss of accommodation with increasing age is called presbyopia.",
			phonetic: "uh-kah-muh-DAY-shun",
			category: 1
		},
		{
			title: "AMSLER GRID",
			definition: "Test card; grid (black lines on white background or white lines on black background) used for detecting central visual field distortions or defects, such as in macular degeneration.",
			phonetic: "AM-slur",
			category: 1
		},
		{
			title: "COMPREHENSIVE EYE EXAMINATION",
			definition: "A complete evaluation of the visual system that may be performed in one or more sessions.",
			category: 1
		},
		{
			title: "CYCLOPLEGIC REFRACTION",
			definition: "Assessment of an eye's refractive error after lens accommodation has been paralyzed with cycloplegic eye drops (to eliminate variability in optical power caused by a contracting lens).",
			category: 1
		},
		{
			title: "DILATED PUPIL",
			definition: "Enlarged pupil, resulting from contraction of the dilator muscle or relaxation of the iris sphincter. Occurs normally in dim illumination, or may be produced by certain drugs (mydriatics, cycloplegics) or result from blunt trauma.",
			category: 1
		},
		{
			title: "EYE M.D.",
			definition: "See Ophthalmologist.",
			category: 1
		},
		{
			title: "FIELD OF VISION",
			definition: "The entire area that is seen without shifting one's gaze.",
			category: 1
		},
		{
			title: "GONIOSCOPY",
			definition: "Examination of the anterior chamber angle through a goniolens (special type of contact lens).",
			phonetic: "goh-nee-AHS-koh-pee",
			category: 1
		},
		{
			title: "INTRAOCULAR PRESSURE",
			definition: "Fluid pressure inside the eye or the assessment of pressure inside the eye with a tonometer. Also called tension.",
			category: 1
		},
		{
			title: "KERATOMETRY",
			definition: "Obtaining corneal curvature measurements with a keratometer.",
			phonetic: "kehr-uh-TAH-mih-tree",
			category: 1
		},
		{
			title: "MYDRIATIC",
			definition: "A drug that dilates the pupil.",
			category: 1
		},
		{
			title: "OPHTHALMOLOGIST (M.D.)",
			definition: "A physician and surgeon who is qualified and specially trained to diagnose and treat all eye and visual system problems, as well as diagnose general diseases of the body.  An Ophthalmologist prescribes lenses to improve visual acuity.",
			phonetic: "ahf-thal-MAH-loh-jist",
			category: 1
		},
		{
			title: "OPHTHALMOSCOPE",
			definition: "Device for viewing the interior of the eye or the retina.",
			phonetic: "ahf-THAL-muh-skohp",
			category: 1
		},
		{
			title: "OPTICIAN",
			definition: "An independent professional who designs, verifies and dispenses lenses, frame and other fabricated optical devices upon the prescription of an Ophthalmologist or an Optometrist.",
			phonetic: "ahp-TISH-un",
			category: 1
		},
		{
			title: "OPTOMETRIST",
			definition: "Doctor of optometry (OD) specializing in vision problems, treating vision conditions with spectacles, contact lenses, low vision aids and vision therapy.  May prescribe some medications.",
			phonetic: "ahp-TAHM-uh-trist",
			category: 1
		},
		{
			title: "PERIMETRY.",
			definition: "Method of charting extent of a stationary eye's field of vision with test objects of various sizes and light intensities. Aids in detection of damage to sensory visual pathways.",
			phonetic: "puh-RIM-ih-tree",
			category: 1
		},
		{
			title: "REFRACTION",
			definition: "Test to determine an eye's refractive error and the best corrective lenses to be prescribed.",
			category: 1
		},
		{
			title: "RETINOSCOPE",
			definition: "Device for measuring an eye's refractive error with no response required from the patient. Light is projected into the eye, and the movements of the light reflection from the eye are neutralized (eliminated) with lenses.",
			phonetic: "RET-in-oh-skohp",
			category: 1
		},
		{
			title: "SLIT LAMP",
			definition: "Microscope used for examining the eye; allows cornea, lens and otherwise clear fluids and membranes to be seen in layer-by-layer detail.",
			category: 1
		},
		{
			title: "SNELLEN CHART",
			definition: "Test chart used for assessing visual acuity. Contains rows of letters, numbers, or symbols in standardized graded sizes, with a designated distance at which each row should be legible to a normal eye. Usually tested at 20 ft.",
			category: 1
		},
		{
			title: "TONOMETRY",
			definition: "Measurement of intraocular pressure.",
			phonetic: "tuh-NAH-mih-tree",
			category: 1
		},
		{
			title: "20/20",
			definition: "See Visual Acuity, Normal visual acuity. Upper number is the standard distance (20 feet) between an eye being tested and the eye chart; lower number indicates that a tested eye can see the same small standard-sized letters or symbols as a normal eye at 20 feet.",
			category: 2
		},
		{
			title: "APHAKIC LENSES",
			definition: "Prosthetic lenses that are designed for patients that have had their crystalline lens removed (aphakia), such as after cataract extraction.",
			category: 2
		},
		{
			title: "ASPHERICAL LENSES",
			definition: "Not spherical; used to reduce marginal aberration; such conic sections as parabolic, hyperbolic, or ellipsoidal; a lens surface having an infinite number of curves with different radii.",
			phonetic: "a-sfer' i-kal",
			category: 2
		},
		{
			title: "AXIS",
			definition: "The orientation of the placement of the cylindrical area of the lens.  The axis can be anywhere from 1 to 180 degrees.",
			category: 2
		},
		{
			title: "BASE CURVE",
			definition: "Applied to a toric surface, the B.C. is the flattest curve on that surface of the lens. In general, the B.C. is the cataloging curve or  curve common to a group of lenses; the weakest curve on the front of a lens.",
			category: 2
		},
		{
			title: "BIFOCAL LENSES",
			definition: "With two focal lengths; an area for distance vision and an area for near vision.",
			category: 2
		},
		{
			title: "BINOCULAR VISION",
			definition: "Blending of the separate images seen by each eye into one composite image.",
			category: 2
		},
		{
			title: "COATING - ANTI-REFLECTIVE ",
			definition: "Coating that can reduce glare and reflections.  Can be useful for people with strong prescriptions and people who drive at night.",
			category: 2
		},
		{
			title: "COATING - MIRRORED",
			definition: "Mirror finishes are thin layers of various metallic coatings on an ordinary lens.",
			category: 2
		},
		{
			title: "COATING - SCRATCH",
			definition: "Protects lens against scratches and is recommended for anyone with plastic lenses.",
			category: 2
		},
		{
			title: "COATING - UV PROTECTION",
			definition: "Blocks ultraviolet rays which are harmful for the crystalline lens, retina, and other parts of the eye and is available on all types of lenses.",
			category: 2
		},
		{
			title: "CONTACT LENSES",
			definition: "Thin, clear disks of plastic that float on the tear film that coats the cornea, the curved front surface of the eye. This lens is used to correct refractive errors including irregularly shaped cornea.",
			category: 2
		},
		{
			title: "CYLINDER",
			definition: "The type of curvature of the spectacle lens to help patients with astigmatism.",
			category: 2
		},
		{
			title: "DIOPTER",
			definition: "Unit to designate the refractive power of a lens.",
			phonetic: "di-AHP-tur",
			category: 2
		},
		{
			title: "EYEWEAR",
			definition: "Lenses, frame and/or contact lenses.",
			category: 2
		},
		{
			title: "FOCAL LENGTH",
			definition: "The distance from the back vertex of a lens to its focal point, strictly called the back vortex focal length.",
			category: 2
		},
		{
			title: "FRAME",
			definition: "The structural part(s) that provide support to the lenses.",
			category: 2
		},
		{
			title: "IOL (INTRAOCULAR LENS)",
			definition: "Synthetic lens that may be surgically implanted to replace the eye's natural lens.",
			category: 2
		},
		{
			title: "LENS OR LENSES",
			definition: "Transparent refracting medium usually made of plastic.",
			category: 2
		},
		{
			title: "LENTICULAR LENSES",
			definition: "A strong lens which has a central area usually 30 to 40 mm ground to the prescription.  The margin has a shallow curve to reduce weight and/or thickness.",
			category: 2
		},
		{
			title: "PATCHING",
			definition: "Covering an amblyopic patient's preferred eye, to improve vision in the other eye.",
			category: 2
		},
		{
			title: "PHOTOCHROMIC",
			definition: "Photochromic are lenses that darken and lighten and change color, in accordance with the amount of ultraviolet light to which they are exposed.",
			category: 2
		},
		{
			title: "PLANO LENSES",
			definition: "Value of no power or zero; such as non-prescription sunglasses or non-prescription sunglasses or colored contact lenses.",
			phonetic: "pla'no",
			category: 2
		},
		{
			title: "POLARIZED LENSES",
			definition: "Lenses that incorporate a filter that reduces reflected glare, such as, sunlight that bounces off smooth surfaces like pavement or water.  They can be particularly useful for driving and fishing.",
			category: 2
		},
		{
			title: "POLYCARBONATE",
			definition: "A material that is significantly more impact-resistant than other plastic.  Polycarbonate lenses are lightweight, scratch-resistant, thin and can be designed to meet most eyeglass design or prescription.",
			category: 2
		},
		{
			title: "PRISM",
			definition: "A wedge-shaped piece of glass or plastic that refracts rays of light. Eye glasses with prisms can correct mild double vision associated with adult strabismus.",
			category: 2
		},
		{
			title: "PROGRESSIVE LENSES",
			definition: "Eyeglass lens that incorporates corrections for distance vision through midrange, to near vision (usually in lower part of lens), with smooth transitions and no bifocal demarcation line.  A single pair of glasses enables the user to see at various distances.",
			category: 2
		},
		{
			title: "READING ADD/READING ADDITION",
			definition: "The amount of plus (+) power in the segment of a bifocal lens.",
			category: 2
		},
		{
			title: "RX",
			definition: "Lens prescription to include the sphere value, cylinder value, axis and any prism present.",
			category: 2
		},
		{
			title: "SINGLE VISION LENSES",
			definition: "Corrective lenses with only one focal length.",
			category: 2
		},
		{
			title: "SPHERE",
			definition: "Indicates how nearsighted (-) or farsighted (+) you are.",
			category: 2
		},
		{
			title: "SUBNORMAL OR LOW VISION AIDS",
			definition: "Devices that are either worn, hand-held, or free-standing that manipulate images to improve vision. It may or may not be used with regular corrective eyewear.",
			category: 2
		},
		{
			title: "TINT",
			definition: "Color added to lenses for either cosmetic or sun sensitivity reasons.",
			category: 2
		},
		{
			title: "TRIFOCAL LENSES",
			definition: "A lens with three focusing points: distance, intermediate and reading.",
			category: 2
		},
		{
			title: "VISUAL ACUITY",
			definition: "See 20/20, The measure of visual power, expressed as a fraction (e.g. 20/20) that is usually determined by one's ability to read letters of various sizes at a standard distance from a test chart.",
			category: 2
		},
		{
			title: "VISUAL FIELD",
			definition: "Full extent of the area visible to an eye that is fixating straight ahead.",
			category: 2
		},
		{
			title: "BENEFIT BROCHURE",
			definition: "A booklet or pamphlet or outline describing specific vision plan benefits.",
			category: 3
		},
		{
			title: "EMPLOYER GROUP",
			definition: "A group that has chosen, in lieu of insurance, to reserve funds for payment for covered services incurred by its employees.",
			category: 3
		},
		{
			title: "HEALTH CARE SERVICE PLAN OR SPECIALIZED HEALTH CARE SERVICE PLAN",
			definition: "An organization that undertakes to arrange for the provision of health care services to subscribers or enrollees, in return for a prepaid or periodic charge.  Vision Plans that provide specialized care to their members are called \"Specialized Health Care Service Plans\".",
			category: 3
		},
		{
			title: "HEALTH MAINTENANCE ORGANIZATION (HMO)",
			definition: "An organization engaged in providing managed care and assuming the risk for health related benefits.",
			category: 3
		},
		{
			title: "INSURANCE CARRIER",
			definition: "An organization engaged in providing and assuming the risk of various benefits.",
			category: 3
		},
		{
			title: "NON-ELECTIVE (MEDICALLY NECESSARY) CONTACT LENSES",
			definition: "Prescribed to patients who meet specific medical criteria for contact lenses. Medically necessary contact lenses are provided for any of the following criteria:  if the examination indicates a prescription change when required following cataract surgery; or for certain conditions of Myopia, Hyperopia, or Astigmatism; or when contact lenses are the only means to correct visual acuity to 20/40 for certain conditions of Keratoconus, or 20/60 for certain conditions of Anisometropia.  A report from the provider and approval from Medical Eye Services is required.",
			category: 3
		},
		{
			title: "NON-PARTICIPATING PROVIDER",
			definition: "An Ophthalmologist, Optometrist or Opticians who is not a contracted vision plan provider.",
			category: 3
		},
		{
			title: "PARTICIPATING PROVIDER",
			definition: "A contracted Ophthalmologist, Optician, or Optometrist who accepts benefit allowances as payment-in-full for covered services.",
			category: 3
		},
		{
			title: "PREFERRED PROVIDER ORGANIZATION (PPO)",
			definition: "An organization of contracted providers who agree to provide designated services and accept assignment of benefits for those services.",
			category: 3
		},
		{
			title: "THIRD PARTY ADMINISTRATOR (TPA)",
			definition: "An organization that administers and processes claims for an Insurance Carrier, Health Maintenance Organization, or Employer Group.",
			category: 3
		}
	]
};