Cataract: A clouding of the lens of the eye caused by clumping of protein on the lens. Symptoms include: cloudy or blurry vision, poor night vision, double/multiple vision, problems with light, colors seem faded, frequent changes in eyeglasses or contact lenses.
Cornea: The outer most layer of the eye through which light passes.
Glaucoma: A group of eye diseases that cause damage to the optic nerve leading to vision loss.
- Primary Angle Glaucoma The result of the rise in inner eye pressure due to blockage of the eye's drainage canals.
- Angle Closure Glaucoma Occurs when the iris blocks drainage canals.
- Secondary Glaucoma Occurs as the result of eye injury, inflammation, tumor, or advanced cases of cataracts or diabeties.
- Normal Tension Glaucoma: Glaucoma that occurs even though the pressure within the eye is normal.
- Pigmentary Glaucoma: Occurs when pigment granules in the back of the iris break into the fluid produced inside the eye. The pigment granules clog the drainage canals of the eye, leading to a rise in pressure within the eye.
Glaucoma Tonometry: A test which measures the pressure within the eye (intraocular pressure).
Iris: The colored part of the eye surrounding the pupil. It changes in size as a function of the amount of light.
Lens: The part of the eye that focuses light on the retina. Made of water and protein.
Macular Degeneration: The name given to the group of diseases causing the light-sensitive cells of the macular zone of the retina to lose function leading to a loss of central or detailed vision.
Pupil: The opening at the front of the eye that regulates the amount of light allowed to pass into the eye.
Retina: The light-sensitive area at the back of the eye which sends visual signals to the brain.