Which statement about Infantile XT is NOT true?

• A. It is usually a large deviation angle
• B. It occurs before 6 months of age
• C. It is constant and unilateral usually
• D. It can lead to a reduction in stereopsis in some cases

Answer: (C)

Infantile exotropia is an early-onset misalignment that typically appears within the first months of life and tends to involve a large outward deviation. While many cases are seen as a constant exotropia, and the misalignment is often unilateral, this isn’t a strict rule. Some infants exhibit alternating or intermittent exotropia, and the eye that deviates can switch over time, especially as binocular development progresses. That variability is why describing it as always constant and unilateral isn’t accurate. The other statements line up with what’s commonly observed: onset before six months, and a risk of reduced stereopsis in some cases due to early disruption of binocular vision.