Glare
Definition
- Glare (vision) is difficulty seeing in the presence of very bright light
Also, according to RNIB the disability glare reduces our visual performance. Disability glare can be caused by eye diseases and can occur with ordinary light sources and levels of light. The structures of the eye are normally clear, which means the light passes directly through our eye. As we age certain eye problems can make the eye’s structures less clear. The most common example of this is a cataract.
- When someone has a cataract, the lens in their eye is not as clear as it should be. This causes the light entering the eye to scatter. The light does not pass smoothly through the lens and scatters throughout the eye. This effect, as well as making things unclear and blurred, also makes coping with bright light difficult. The amount of scattering of light depends on the amount of light entering the eye and how thick the cataract is. This means that a brighter light will scatter more, causing things to become more blurred and causing more glare. People with cataracts often have a lot of trouble with glare.
