Age-Related Macular Degeneration (AMD) - An eye disease that results in a loss of central, “straight-ahead” vision.  AMD is the leading cause of vision loss in Americans.

Cataract – A clouding of the lens.  People with cataracts see through a haze.  In a usually safe and successful surgery, the cloudy lens can be replaced with a plastic lens. 

Eye Care Professional - An optometrist or ophthalmologist. 

Glaucoma – An eye disease, related to high pressure inside the eye, which damages the optic nerve and leads to vision loss.  Glaucoma affects peripheral, or side, vision. 

Low Vision – A visual impairment, not corrected by standard eyeglasses, contact lenses, medication, or surgery, that interferes with the ability to perform everyday activities. 

Ophthalmologist – A medical doctor who diagnoses and treats all diseases and disorders of the eye, and can prescribe glasses and contact lenses. 

Optician – A trained professional who grinds, fits, and dispenses glasses by prescription from an optometrist or ophthalmologist. 

Optometrist – A primary eye care provider who prescribes glasses and contact lenses, and diagnoses and treats certain conditions and diseases of the eye. 

Orientation and Mobility Specialist – A person who trains people with low vision to move about safely in the home and travel by themselves. 

Specialist in Low Vision -  An ophthalmologist or optometrist who specializes in the evaluation of low vision.  This person can prescribe visual devices and teach people how to use them. 

Vision Rehabilitation Teacher -  A person who trains people with low vision to use optical and nonoptical devices, adaptive techniques and community resources. 

Visual and Adaptive Devices - Prescription and nonprescription devices that help people with low vision enhance their remaining vision.  Some examples include magnifiers, large print books, check-writing guides, white canes, and telescopic lenses.