Pseudoconvergent squint is seen with –
**Core Concept**
Pseudoconvergent squint is a type of strabismus characterized by an apparent convergence of the eyes when they are actually diverging. This occurs due to a difference in the amount of esophoria (inward deviation) between the two eyes, leading to an apparent inward movement of the eye with the larger esophoria.
**Why the Correct Answer is Right**
Pseudoconvergent squint arises from a difference in the amount of esophoria, which is usually caused by a difference in the amount of convergence between the two eyes. When the eyes are looking at a distant object, the eye with the larger esophoria will appear to be converging more than the other eye, resulting in an apparent inward movement. This is due to the brain's attempt to compensate for the difference in esophoria by adjusting the angle of convergence.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because esotropia (inward squint) is a different type of strabismus that occurs when one or both eyes are turned inward.
**Option B:** This option is incorrect because exotropia (outward squint) is a different type of strabismus that occurs when one or both eyes are turned outward.
**Option C:** This option is incorrect because hyperopia (farsightedness) is a refractive error that affects the shape of the eye, but it does not directly cause pseudoconvergent squint.
**Clinical Pearl / High-Yield Fact**
Pseudoconvergent squint can be differentiated from true convergent squint by covering one eye and observing the movement of the uncovered eye. In pseudoconvergent squint, the uncovered eye will move outward when the covered eye is moved inward, whereas in true convergent squint, the uncovered eye will move inward when the covered eye is moved inward.
**Correct Answer:** D. Esophoria