Strabismus

Strabismus is a condition in which the eyes do not line up with each other when looking at an object.^[2]

Strabismus
Other names	Heterotropia, crossed eyes, squint[1]
A person with exotropia, an outward deviated eye
Pronunciation	/strəˈbɪzməs/[1]
Medical specialty	Ophthalmology
Symptoms	Nonaligned eyes[2]
Complications	Amblyopia, double vision[3]
Types	Esotropia (eyes crossed); exotropia (eyes diverge); hypertropia (eyes vertically misaligned)[3]
Causes	Muscle dysfunction, farsightedness, problems in the brain, trauma, infections[3]
Risk factors	Premature birth, cerebral palsy, family history[3]
Diagnostic method	Observing light reflected from the pupil[3]
Differential diagnosis	Cranial nerve disease[3]
Treatment	Glasses, surgery[3]
Frequency	~2% (children)[3]

References

1. "Strabismus noun - Definition, pictures, pronunciation and usage notes | Oxford Advanced Learner's Dictionary". www.oxfordlearnersdictionaries.com. Archived from the original on August 1, 2017. Retrieved August 1, 2017.
2. "Visual Processing: Strabismus". National Eye Institute. National Institutes of Health. June 16, 2010. Archived from the original on October 5, 2016. Retrieved October 2, 2016.
3. Gunton KB, Wasserman BN, DeBenedictis C (September 2015). "Strabismus". Primary Care. 42 (3): 393–407. doi:10.1016/j.pop.2015.05.006. PMID 26319345.