Glossary

GlossaryAccommodation – the eye’s ability to change focus from near to distant

Amblyopia – also referred to as lazy eye, is when one eye has a loss or deficiency of development of clear vision

AMD or ARMD – an acronym for age-related macular degeneration, which is a disorder where vision gradually worsens as a result of a damaged macula

Astigmatism – a vision condition that causes blurred vision because the cornea is irregularly shaped

Bifocal lenses – a single eyeglass lens with two viewing areas allowing for both near and far vision to be corrected

Blepharitis – an eye infection that causes red, irritated and itchy eyelids, as well as dandruff like flakes on the eyelashes

Cataract - the clouding of the eye’s lens causing blurred vision

Chalazion – a small lump that appears on the eyelid as a result of inflammation in the sweat gland causing swelling, redness and occasional pain

Conjunctivitis – also known as pink eye; an infection or inflammation of the conjunctiva (the white part of the eye) that causes redness and itchiness

Cornea – the front, clear surface of the eye

GlossaryDiabetic Retinopathy – an eye disease that usually affects both eyes causing the retina’s blood vessel to be damaged

Dry eye – the eye’s inability to produce enough tears causing the eyes to be dry and irritated

Glaucoma - a common group of eye disorders that damage the optic nerve resulting in vision loss

Hyperopia – also referred to as farsightedness; a vision condition that makes up close objects difficult to see without corrective lenses

Intraocular lens (IOL) – an artificial plastic lens that is surgically implanted into the eye after cataract surgery to restore a person’s vision

Iris – the colored part of the eye that controls the amount of light allowed through the pupil

Keratitis – an infection or inflammation of the cornea

LASIK – a laser treatment used to correct refractive errors, including nearsightedness, farsightedness and astigmatism

Lens – the transparent part of the eye that focuses rays of light onto the retina

Macula – the part of the eye that allows us to clearly see fine details

Myopia - a vision condition also referred to as nearsightedness that makes far away objects appear blurry

Ophthalmologist – a physician that focuses on the medical and surgical treatment of a disorders and diseases of the eyes

Optic Nerve – a collection of over one million nerve fibers that sends impulses received from the retina to the brain to be interpreted into images

Optometrist – a physician who focuses on the treatment of refractive errors and certain eye diseases

Photorefractive Keratotomy (PRK) – a laser procedure performed to reshape the cornea in order to reduce nearsightedness

Presbyopia – an age-related eye condition where one’s near vision gradually becomes worse

Progressive lens – also known as “no-line bifocals” that correct vision for multiple ranges without having a noticeable line in the lens like traditional bifocals

Refractive Error – when the shape of your eye does not bend light correctly, causing blurred vision (i.e. myopia, hyperopia, astigmatism and presbyopia)

Strabismus - a condition also referred to as crossed eyes where both eyes do not look in the same direction at the same time

Sty – a tender, red bump on the eyelid caused by an infection or inflammation of the oil glands in the eyelid causing tenderness and burning

Uveitis – the inflammation of the middle layer of the eye (uvea)

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