Dr. S.H. Ashwani Kumar
Low Vision Aid Specialist
MBBS, DO, MS
Mahavir Netralay, Patna
9108285969
WHO Definition of Low Vision
1. Moderate Visual Impairment: Best corrected visual acuity of less than 6/60 to counting fingers 3 meter, visual field diameter of less than 20 degree
2. Severe Visual Impairment: Best corrected visual acuity of less than 6/60 to counting fingers 3 meters.
3. Profound Visual Impairment: Best corrected visual acuity of less than counting fingers 1 meter or visual field diameter of 10 degree or less
Indication of low vision aid
1. Macular Degeneration
2. Diabetic retinopathy
3. Retinitis Pigmentosa
4. Albinism
5. Cortical Visual Impairment
6. Glaucoma
7. Stroke/Brain Injury
8. Optic Nerve Disease
9. Nystagmus
Non Optical Low Vision Aids
1. M Training for Patients with central vision loss
Visual Rehabilition
It not only means assisting with magnifiers, but helps a person to lead his life independently.
Types of Low Vision Aids:
A. Magnifying Spectacles
B. Hand Magnifiers
C. Electronic Magnifiers