A person with low vision is the one who has impairment of visual functioning even after treatment and/or standard refractive correction, and has a visual acuity of less than 6/18 to light perception, or a visual field of less than 10° from the point of fixation, but who uses, or is potentially able to use, vision for the planning and/or execution of a task.
Low vision services are designed to help a visually impaired person use his or her remaining vision most efficiently and effectively. they are provided by a coordinated team of eye professionals who evaluate a person’s vision and the way the person uses vision in various aspects of life.
low vision service helps to distribute occupations according to the devices they are prescribed.
Low Vision Aids
low vision aids on a broad classification comprises
1. optical aids
2. non optical aids
Optical aids consists of
2. aspheric lenticular spectacle 3. lenses.
4. hand magnifier
5. stand magnifier
6. Fresnel prism
8. paper weight magnifier
9. bar magnifier
10. pocket magnifier
11. electronic aids as closed circuit television system
Non-Optical aids includes seven categories of aids :
1. large print books
2. reading stand that supports posture and comfort.
3. illumination devices such as fluorescent lamps and glare 6. control devices such as photochromatic glasses.
4. writing devices as typoscopes
5. medical management devices as insulin syringes with bold letters
6. mobility canes
7. sensory substitution devices such as talking books
Ocular conditions benefited by low vision aids are:
2. central serous retinopathy
3. high myopia
5. diabetic retinopathy