Two distinct types of light-sensing cells keep the retina working — rods tuned for faint, low-light conditions, and cones tuned for bright light, colour, and fine detail. Retinitis Pigmentosa begins when the rod population starts breaking down first, following a sequence that repeats itself fairly reliably across patients even though the pace of decline varies considerably. It is the single most frequently diagnosed inherited cause of progressive vision loss anywhere, which is why the term comes up so regularly once an Ethiopian eye specialist first raises it with a family.
Every RP patient’s disease moves along its own timeline, so the opening step of any consultation is establishing precisely where a particular patient currently stands on that timeline. Nearly every recommendation that follows is anchored to that single piece of information.

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
“Not necessarily — outcomes differ a great deal from patient to patient, largely depending on which gene is responsible and how it has been inherited. Many people with RP retain genuinely useful vision, particularly centrally, well into later life. That is why each case is looked at on its own terms rather than assumed to follow a single fixed path.”
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That depends on the inheritance pattern tied to the specific gene involved, and genetic testing remains the most dependable way to work that out. We can explain what it likely means for your family, though for decisions about future children, bringing a certified genetic counsellor into the conversation is a good idea.”
“A standard eye check is designed to catch things like refractive error or cataract, not RP. Confirming and monitoring RP calls for specialised equipment — ERG and detailed field mapping in particular — that most general clinics do not have on hand, which is why a dedicated evaluation usually means seeking it out elsewhere.”
“Bring along any eye reports already in hand, a general outline of family history if RP has appeared before, and a timeline of when symptoms first began and how they have changed since. Having that ready considerably speeds up the diagnostic process.”
