Choroideremia is unusual in that it involves the simultaneous breakdown of three separate retinal layers — the choroid beneath, the retinal pigment epithelium, and the photoreceptors sitting above. Its X-linked inheritance means the condition is seen almost entirely in men, while women who carry the faulty gene tend to notice only subtle changes that rarely interfere with everyday vision.
We frequently see Zimbabwean families after a local ophthalmologist has examined a male relative’s fundus and flagged something that didn’t fit the usual picture of RP, prompting a referral for 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
“The CHM gene sits on the X chromosome, and men have only one copy of that chromosome — so a single faulty gene is enough to cause disease. Women have two X chromosomes, and the working copy in carriers is normally sufficient to prevent serious vision problems, though minor changes can still occur.”
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Not definitely. Each son has roughly a one-in-two chance of inheriting the mutated gene, and each daughter has roughly the same chance of becoming a carrier. Genetic testing can give your family a more exact picture.”
“The distinctive scalloped atrophy affecting both the choroid and RPE together stands out from the more even photoreceptor loss typical of classic RP, and an experienced specialist can often suspect the diagnosis on sight — though genetic testing is needed to confirm it.”
“Sooner is better. Getting a specialist assessment done before central vision starts to change keeps more treatment and planning options open than waiting until symptoms appear”
