Low vision is an eye condition which is characterized by reduced vision in individuals even after using eye glasses or contact lenses to correct their vision. It may be a result of acquired factors such as various forms of optic atrophy or congenital diseases, for example, Leber’s congenital amaurosis or retinitis pigmentosa. Individuals who have a reduced vision that can’t be corrected by wearing contact lenses or eye glasses are usually considered as visually impaired.
Common Types of Low Vision
- Loss of Central Vision — The peripheral vision remains unaffected but the loss of central vision forms a blindspot or blur in the eye. This condition makes it difficult to distinguish objects in the distance, recognize faces and to read. As the side vision remains unaffected, the mobility is not hampered.
- Loss of Side (Peripheral) Vision — This is characterized by difficulty in distinguishing anything directly below or above the eye level. The central vision remains unaffected. Hence, it is possible to directly see in the straight direction. However, loss in peripheral vision may affect the mobility. If it is a severe form, it can reduce the reading speed. This condition is also known as “tunnel vision”.
- Blurred Vision — Even with conventional eye glass correction, blurred vision may cause objects which are both far and near to appear to be out of focus.
- Hazy Vision — Hazy vision leads to a sensation of a glare or film extending over the entire field of vision.
- Extreme Sensitivity to Light — This happens when normal illumination affects the vision. This produces a glare disability and washed-out image. Individuals afflicted with this condition may experience discomfort or pain even from normal illumination.
- Night Blindness — This condition causes inability to see in the night time, for example, in dimly lit areas like restaurants and movie theaters.
1 Comment
Very Informative Article!