Question

1. What is the name of the “Blind Spot” of the eye, and what forms it? Optic disc
2. Explain Macular Degeneration and it’s effects to your sight.
3. What role does Schlemm’s Canal play in Glaucoma and how is Glaucoma treated? Can it lead to blindness if untreated? Why?
4. Explain cataract formation and what causes it.
5. Explain the following:

      a. Convergence

            b. Accommodation

            c. Refraction

6. Explain the problems associated with:
   • Myopia “Near Sighted”
   • Hyperopia “Far Sighted”
   • Astigmatism

Answer 1

Question no 1

Blind spot if eye is named as punctum caecum . This is because they lack receptors and is called blind spot because optic nerve and blood vessel leave the eye through this area making it a physiological blind spot.

optic disc

it corresponds to small blind spots in the .retina

macular degeneration

it is a condition where the degeneration of macula occur in our eyes . It cause defect in the centere of visual field l. There are two types of degeneration that is wet and dry macular degeneration.

Macular degeneration in the begining will not cause any problems but as it progresses it will cause blurred vision and then to central visual defect