MOSAICISM AS A PROPOSED MECHANISM FOR ASYMMETRIC RETINAL TESSELLATIONS

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Abstract

Background/Purpose:

Report a case of markedly asymmetric retinal tessellations and propose mosaicism as a mechanism.

Methods and Results:

A 59-year-old pseudophakic woman presented with uncorrected 20/20 vision and was found to have markedly different retinal tessellation appearances in both eyes. The axial lengths were 25.66 mm and 25.88 mm in the right and left eyes, respectively, and no significant asymmetrical choroidal thinning was seen on optical coherence tomography or optical coherence tomography angiography. Fluorescein angiogram showed significant hyperfluorescence, representing the underlying choroid, which correlated with the tessellation patterns in the left eye. She had no other ocular or systemic findings such as stripes or whorled skin.

Conclusion:

This is the first reported case of markedly asymmetric retinal tessellation patterns that are not due to asymmetric axial myopia or choroidal thinning. We propose that mosaicism is a possible mechanism causing this finding.

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