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Clockwise, from upper left: Topcon’s Exam 5000 system includes a chart projector, autorefractor and topographer or keratometer; Marco’s Epic automated phoropter can be used to perform a subjective refraction in three to five minutes; Marco’s OPD-Scan III combines
an autorefractor and a corneal analyzer.
The “digital” aspects of these technologies enable greater accuracy of measurement, resulting in more precise prescriptions that can be used to produce digitally designed and manufactured lenses.

Dr. Sexton would argue the quality of the prescription he gets from the AccuExam is more precise than he could get from a manual phoropter. That’s not only a function of electronics and technology within the device; it’s also a function of how much time patients spend at the phoropter.

“The traditional refraction sits the patient behind the phoropter for a much longer time, which dissociates the eyes and allows the patient to accommodate behind the phoropter,” he said. “Additionally, having the patient judge between the repeated lens choices of a traditional refraction can cause fatigue, all of which can change the prescription. AccuExam not only significantly reduces time behind the phoropter, it also removes the need to ask patients to make repeated lens choices, allowing for a more real-world, objective Rx.”