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Application of Optical Coherence Tomography to a Mouse Model of Retinopathy

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Eye Motility Alterations in Retinitis Pigmentosa.

Raffaele Migliorini¹, Anna Maria Comberiati¹, Giovanni Galeoto¹

¹Department of Sense Organs, University of Rome "La Sapienza," Via del Policlinico 155, 00161 Rome, Italy.

Journal of Ophthalmology

|July 1, 2015

Summary

Individuals with retinitis pigmentosa (RP) often experience ocular motility (OM) disorders. These OM disorders are linked to a genetic origin, not refractive errors or impaired binocular vision.

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Area of Science:

Ophthalmology
Genetics
Neuroscience

Background:

Retinitis pigmentosa (RP) is a group of inherited disorders that affect the retina's structure and function.
Ocular motility (OM) disorders can impact visual function and quality of life.

Purpose of the Study:

To investigate the prevalence and characteristics of ocular motility (OM) disorders in individuals with retinitis pigmentosa (RP).
To determine the potential causes of OM disorders in RP patients, differentiating from refractive errors and binocular vision impairments.

Main Methods:

Evaluated 23 individuals (9 female, 14 male) with RP and average visual acuity of 6/10.
Assessed ocular motility (OM) using cover tests for vertical deviations and evaluated muscle function (hyperfunction/hypofunction) of specific eye muscles (IO, SO, SR, IR).

Main Results:

Significant findings included hyperfunction of the inferior oblique (IO) of the right eye (39.1%) and superior oblique (SO) of the left eye (34.5%).
Hypofunction of the superior rectus (SR) in both eyes (30.5%) and inferior rectus (IR) in both eyes (21.7%) were also noted.
Vertical deviations (r/l and l/r) were observed in 3.45% and 6.9% of cases, respectively.

Conclusions:

Ocular motility (OM) disorders in RP patients are not caused by significant refractive defects or severely impaired binocular vision.
The study suggests a genetic origin for the observed ocular motility (OM) disorders in individuals with retinitis pigmentosa (RP).