The objective of this prospective study is the treatment of esotropia by prescribing the full precise optical correction of refractive errors in children up to 3 years old.

This investigation includes children with esotropia associated with hyperopia, hypermetropic astigmatism, myopia, myopic astigmatism and minor ametropias. All children are prescribed full optical correction of refractive errors with special attention to astigmatism up to 0.5 Dpt to achieve maximal clear image on the retina of both eyes.If necessary, direct occlusion or penalization were administered to the children. The investigators suggest that this approach will give good results in the treatment of esotropia.

Inclusion Criteria:

• Within the age of 3 months to 3 years (inclusive infantile esotropia)
• Patients with constant or periodic esotropia and with revealed angle of deviation 5 degrees or over by Hirschberg test
• Patients with refractive errors (inclusive minor ametropias from 0.5 Dptr)

Exclusion Criteria:

• Age above 3 years
• Patients with neurological diseases and paralytic strabismus