Which of the following is TRUE in a 2 year old child with a left convergent concomitant squint?

Concomitant convergent squint or esotropia denotes inward detion of one eye. Two types: Unilateral: The same eye always detes inward and the second normal eye takes detion Alternating: Either of the eyes detes inward and the other eye takes up fixation, alternately. In concomitant strabismus the amount of detion in the squinting eye remains constant in all the directions of gaze; and there is no associated limitation of ocular movements. Ref: Comprehensive Ophthalmology by A K Khurana, 4th edition, Page 324, 325.