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Alteration Ocular Motility in Retinitis Pigmentosa: Case-Control Study.

Anna Maria Comberiati¹, Chiara Lomartire¹, Mariaelena Malvasi¹

¹Department of Sense Organs, Sapienza University of Rome, Rome, Italy.

Clinical Optometry

|February 27, 2024

Summary

This summary is machine-generated.

Ocular motility (OM) disorders and strabismus are common in retinitis pigmentosa (RP) patients, affecting 77.42% and 45.16% respectively. These conditions are likely due to a genetic factor, with men being more susceptible.

Keywords:

genetic factor ocular motility orthoptic evaluation retinitis pigmentosa strabismus

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Area of Science:

Ophthalmology
Genetics

Background:

Retinitis pigmentosa (RP) is a group of inherited disorders that affect the retina.
Ocular motility (OM) disorders and strabismus are common in the general population, but their prevalence in RP patients is not well understood.

Purpose of the Study:

To evaluate the prevalence of ocular motility (OM) disorders and strabismus in a sample of patients with retinitis pigmentosa (RP).
To assess potential correlations between OM alterations and strabismus in RP patients based on age, refractive error, or binocular vision impairment.

Main Methods:

A cross-sectional retrospective analysis was conducted on RP patients and a control group.
Standardized orthoptic evaluations included anamnesis, best-corrected visual acuity, complete eye examination, corneal reflex, cover test, OM assessment, Hess screen, and Lang test.

Main Results:

The incidence of OM disorder was 77.42%, and strabismus was present in 45.16% of RP patients.
Exotropia was the most common type of strabismus (41.93%), with intermittent exotropia in 25% of cases.
OM alterations included overaction of the inferior oblique (51.6%) and overaction of the lateral rectus (18%).
Alterations in OM and strabismus were not correlated with age or high refractive defect.
Motility disorders and strabismus in RP patients are attributed to a genetic factor, with men being more susceptible.

Conclusions:

Ocular motility disorders and strabismus are highly prevalent in retinitis pigmentosa patients.
These conditions are likely linked to the genetic basis of RP, suggesting a higher susceptibility in males.