Unit 5: Children & Squint
4. Strabismus (squint)
Describing Squints
If the visual axis is convergent (eye turned in) this is termed an ESO deviation (i.e. esophoria or esotropia)
Image shows a left esotropia.
Source: EyeRounds.org.
Contributor: William Charles Caccamise, Sr, MD, Retired Clinical Assistant Professor of Ophthalmology, University of Rochester School of Medicine and Dentistry.
If the visual axis is divergent this is termed an EXO deviation (i.e. exotropia or exophoria)
Image shows left exotropia
Source: EyeRounds.org.
Contributor: William Charles Caccamise, Sr, MD, Retired Clinical Assistant Professor of Ophthalmology, University of Rochester School of Medicine and Dentistry.
If the visual axis is higher (eye turned upwards) this is termed an hypertropia.
Image shows left hypertropia.
Source: EyeRounds.org.
Contributor: Rahul Bhola, MD, University of Iowa.