This document defines and describes different types of strabismus (squint) including heterophoria, heterotropia, esotropia, exotropia, and their subtypes. It provides details on the definition, characteristics, and treatment for each type. The treatment section discusses approaches such as refractive correction, orthoptic treatment, prism therapy, and surgery depending on the specific type and features of the strabismus. The document is written by an ophthalmologist and professor to inform about strabismus for medical professionals.