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New device may better predict post-cataract surgery visual acuity
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KIAWAH ISLAND, S.C. — The Kylstra-Richter SCALE was found to be superior in predicting visual acuity after cataract surgery compared with the Guyton-Minkowski potential acuity meter, according to a study presented here.
“The Kylstra-Richter SCALE is a friction-fit lens guard, which holds a 20 D condensing lens in place, and about 5 cm anterior to that is a transparent [ETDRS] eye chart, which is on an adjustable focal length for ametropic patients,” Beth Richter, MD, PhD, said at Kiawah Eye 2013.
The clinical comparison study included 23 patients who were assessed with both the Kylstra-Richter SCALE and the potential acuity meter (PAM).
Twenty-two patients were able to read the SCALE, but one of those patients could not read the PAM. One patient was unable to read either chart, Richter said.
“We were able to get them to the smallest line on the scale, and one patient that has had surgery was a 20/20 postoperative acuity,” she said.
“The Kylstra-Richter SCALE is a compact, simple and economic method to assess potential acuity, and it does estimate postoperative visual acuity more effectively than the current gold standard,” Richter said.
Disclosure: Richter has a U.S. patent pending on the Kylstra-Richter SCALE.