Answer
C. Spatulated needle is ideal for corneal graft as it stays within a layer. 
However, the broad cross section of the needle may create a wound
which is bigger than the suture and micro leakage may occur following surgery.

Answer
D. A round bodied needle is designed for soft tissue such as liver. In ophthalmology, it is rarely used except in iris suture.

Answer
C. Again spatulated needle is ideal for partial thickness tarsal plate suture. 
Both cutting (A) and reverse cutting (B) needles increase the risk of cutting 
through the tarsal plate and the round bodied needle, with its cutting edge 
only at its tip, is difficult to pass through a tough structure like the tarsal plate.

Answer
B. Both cutting (A) and reverse cutting (B) needles are ideal for skin 
closure. The cutting needle with its sharp edge on the surface can cut
through the surface. The reverse cutting needle with its sharp edge
inferiorly is less likely to cut through the surface but more likely to cut an underlying tissue.

Answer
A. Infantile esotropia is characterized by large angle deviation for both distance and near and normal refractive error.

Answer
B. Refractive accommodative esotropia is characterized by a moderate distance deviation that increases for near fixation and a high hypermetropia. 

AnswerE. Paretic esotropia usually has a larger degree 
of deviation for distance than near. And the ocular movement is non-comitant.

Answer
B. This is a refractive accommodative esotropia as in 3.

Answer
C. Non-refractive accommodative esotropia is caused by a high AC/A ratio. The distance deviation is small but increases significantly for near. The refraction is usually norm.