###Rationale: The critical period of developed of fixation reflex is 5-6 months of age.
This is the reason why unilateral cataracts in children should be operated early. Remember –
Binocular vision develops at 5-6 years.

###Answer: OPTION D IS CORRECT.
###Question: Central macular fixation developed at :
###Options:
A. 3 weeks
B. 3 months
C. 6 weeks
D. 6 months
