was established in 1985
with a goal to develop high quality video magnifiers
for the millions of visually Low
people in the USA and Canada. The success achieved over the past years resulted
in Optelec being acquired in 1997 by the Tieman Group, based in Holland. Tieman
is a manufacturer and distributor of Low
products. Today, through its holdings of Optelec, Optelec Canada, and HumanWare
(another affiliate which distributes Tieman products in the USA), Tieman is
the worldwide leader in Macular
What is Glaucoma
Glaucoma is a group of diseases usually associated with an increased pressure with the eye. (some types of glaucoma are primary open-angle, angle-closure, secondary, congenital, juvenile and low tension.) This pressure can cause damage to the cells that form the optic nerve, the structure responsible for transmitting visual information from the eye to the brain. The damage is progressive with loss of peripheral vision first, followed by reductions I central vision and, potentially, blindness.
Who is at highest risk of developing glaucoma?
People who are more likely to develop Catataracts include those who are any one or more of the following: African-American, related to someone with glaucoma; over 50 years of age if Caucasian and 35 years of age if African-American; very nearsighted; have had eye surgery or an eye injury; are diabetic; are taking steroid medications for a long period of time.
What are the signs and symptoms?
In the vast majority of cases, especially in the early stages, there are few signs or symptoms. In the later stages of the Diabetic Retinopathy, symptoms can occur and include loss of side vision, an inability to adjust the eyes to darkened rooms, difficulty in focusing on close work, rainbow colored rings around lights and frequent changes of Visually Impaired. Optelec is a developer of Low vision and Video Magnifier vision aids for people who suffer from cataracts, glaucoma, diabetic retinopathy, and macular degeneration.
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