Choroideremia is an X-linked inherited retinal condition that affects three layers at once — the choroid, the retinal pigment epithelium, and the photoreceptors — leading to their progressive, coordinated degeneration. Because of its X-linked inheritance, it almost always presents in males, while female carriers usually have mild, non-progressive changes that rarely affect vision meaningfully.
Somali families are often referred after a male relative shows a fundus appearance that a local ophthalmologist recognises as atypical for standard retinitis pigmentosa, prompting genetic confirmation of choroideremia specifically.

Associate Professor, Vitreo-Retina Surgeon. 10+ Years Experience

Senior Consultant Ophthalmologist & Eye Surgeon· 26+ yrs experience

Consultant Ophthalmologist & Eye Surgeon, MD, DO .16+ Years Experience
Given the relatively long window during which central vision remains intact, the emphasis in choroideremia care is on supporting retinal health for as long as possible. Regenerative stem cell therapy is considered for eligible patients as part of this supportive strategy, alongside close monitoring of the advancing edge of degeneration and low-vision planning ahead of any anticipated central vision changes.
“Why does choroideremia mainly affect men and not women.”
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Each son of a carrier mother has roughly a one-in-two chance of inheriting the mutated gene and being affected, and each daughter has roughly a one-in-two chance of becoming a carrier herself. Genetic testing can clarify individual risk with more certainty.”
“The pattern of atrophy tends to have a distinctive scalloped appearance involving the choroid and RPE together, which an experienced retina specialist can often distinguish from the more uniform photoreceptor loss seen in classic RP, though genetic testing is used to confirm the diagnosis.”
“Earlier evaluation generally allows more options to be discussed while central vision remains intact, so we encourage families not to wait until central vision symptoms appear before seeking a specialist assessment.”
