An Acquired ET will typically present after __________ of age.

An Acquired ET will typically present after __________ of age.

• A. 6 weeks
• B. 6 months
• C. 6 years
• D. 10 years

Answer: (B)

In pediatric strabismus, onset timing helps distinguish types. Infantile esotropia almost always appears within the first six months of life; when a new inward turning shows up after this period, it’s considered acquired. This cutoff reflects how binocular vision and eye alignment develop during infancy—before six months, deviations are typically congenital or infantile, while after six months a new deviation suggests an acquired cause rather than the early infantile pattern. So an acquired esotropia is typically seen after six months of age. The other options fall outside the usual window for acquired onset: very early (before six months) suggests infantile, and much later ages are not the typical timing used to characterize acquired ET in most exams.

In pediatric strabismus, onset timing helps distinguish types. Infantile esotropia almost always appears within the first six months of life; when a new inward turning shows up after this period, it’s considered acquired. This cutoff reflects how binocular vision and eye alignment develop during infancy—before six months, deviations are typically congenital or infantile, while after six months a new deviation suggests an acquired cause rather than the early infantile pattern. So an acquired esotropia is typically seen after six months of age. The other options fall outside the usual window for acquired onset: very early (before six months) suggests infantile, and much later ages are not the typical timing used to characterize acquired ET in most exams.