Strabismus – Questions

1: what is the definition of Squint?















1A: Misalignment of the visual axes.

2: What are the two types of squint and how common / rare are they?











2A:  Concomitant (common)
and Paralytic (rare)


3: What is Concomitant Squint due to?











3A:  Concomitant squint is due to an imbalance in the extraocular muscles
convergent is more common than divergent



4: What is Paralytic squint due to?











4A:  Due to paralysis of extraocular muscles


5: What two tests are used in detecting squint?











5A: The corneal light reflection test and the cover test.


6: Describe the corneal light reflection test














6A: Used to detect squint:  holding a light source 30cms from the child’s face to see if the light reflects symmetrically on the pupils.


7: What is the point of the cover test?













7A: The cover test is used to identify the nature of the squint


8: Describe the cover test:












8A: Ask the child to focus on an object

cover one eye
observe movement of the uncovered eye
cover other eye and repeat test

9: What is one problem with squint long term?












9A: Development of amblyopia


10: what is amblyopia?











10A: also known as lazy eye, is a vision development disorder in which an eye fails to achieve normal visual acuity, even with prescription eyeglasses or contact lense


11. What is the managment of squint?













11A: Eye patches may help prevent amblyopia
Referral to secondary care is appropriate