For families with elderly parents in the UAE — including parents visiting on long-stay family visas — a home visit solves a genuine access problem. Getting a frail 78-year-old to a mall optician involves transport, walking distance, queues and heat; a licensed optometrist coming to the majlis removes all of it. A screening visit at AED 200–400 checks acuity, examines the lens for clouding, and can include eye pressure and retinal checks depending on the kit carried.
Understand what you are buying, though: screening and referral, not diagnosis or treatment. Cataract assessment and surgery decisions belong to an ophthalmologist, and the real product of the home visit is a clear written report saying either 'no urgent concern, recheck in twelve months' or 'refer to an eye clinic now'. That referral, made six months earlier than it otherwise would have been, is where the value sits — earlier assessment generally means more options and a smoother path. See a doctor promptly, without waiting for any home visit, if an older relative reports sudden vision loss, flashes and new floaters, eye pain, or a curtain across their vision; those are emergency symptoms, not screening material.