The OKO serves optometry practices and ophthalmology clinics that test visual acuity at the optimal 5 m distance. LED technology provides optimal brightness and backlighting time, and the anti-reflective optotypes reduce glare and improve patient contrast.
Point illumination shapes the routine. The examiner can light an entire row of characters or a single selected character, guiding the patient to the right line without a pointer. The infrared remote activates the optotype, highlights a row or a character, selects the highlighting type, switches between row and character mode, and blanks the optotype.
Interchangeable optotypes suit different patients. Digits, letters, hands, children's pictures, and Snellen hooks are available, and a built-in mechanism switches them quickly. An examiner can switch from adult letters to children's pictures in the same consultation. One optotype comes with the chart, but you can add more sets, so a practice can choose the sets that match its patients. Letters suit many adults, pictures suit young children, and hooks suit patients who indicate a direction, so one chart can serve a whole clinic list.
The backlight turns off automatically after 5 minutes of inactivity. The chart measures 560 × 395 × 60 mm, weighs 6 kg, and connects to a 230 V supply via a 3 m cable, making it easy to mount in a consulting room. Its slim body keeps the unit close to the wall, and the remote lets the examiner work from the patient's side throughout the consultation, keeping the visit calm and well-paced.