1) Strabismus 
Synonym for strabismus ... <clinical sign> A deviation of the eye which the patient cannot overcome. The visual axes assume a position relative to each other different from that required by the physiological conditions. The various forms of strabismus are spoken of as tropias, their direction being indicated by the appropriate prefix, as cycl...
esotropia.
Type: Term Synonyms: strabismus
strabismus, esp. the form in which one or both eyes turn inward.