Total visual impairment No light perception What Eye Prescription is Considered Legally Blind? This idea of creating custom /10 vision with contact lenses has been around for awhile, but researchers sort of gave up on it save a few because of lack of commercial interest from the big boys It then migrated to the surgical correction arena (LASIK, PRK, etc), but the results weren't so predictable Profound visual impairment /500/1000 visual acuity, or 6 10 degrees on visual field;
Pdf Measuring Vision And Vision Loss