The current gold standard for measuring the refractive error of people is based on the use of the phoropter. This method has hardly changed over the last 120 years. This archaic method has a multitude of drawbacks:
Waiting lists reduce the possible conversion rate in optical shops. In addition, it causes people to extend their vision check as long as possible.
Exclusion of young children, elderly or people with a mental disability since the diagnostic process requires feedback from the subject.
Most phoropters used in optical shops are still manual devices requiring an additional process to digitalize the outcome.
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