Question

Following test is used to diagnose which ocular condition as shown in image:

• A. Strabismus
• B. Heterophoria
• C. Both A & B
• D. None of the above

Answer 1

The Correct Option is C

Step 1: Depicted is the cover/uncover examination used to evaluate the position and balance of the two eyes.
Step 2: When one eye is occluded and the fellow eye shifts to take up fixation, a constant misalignment - a tropia, i.e. strabismus - is being demonstrated.
Step 3: Switching the occluder rapidly between eyes (alternate cover) dissociates fusion; a refixation movement on uncovering signals a latent deviation, the phoria.
Step 4: Since the same test family identifies manifest strabismus as well as heterophoria, the answer encompasses both options.
\[\boxed{\text{Both A and B}}\]