New Device to Test Potential Visual Acuity Compared With Gold Standard Potential Acuity Meter in Cataractous and Normal Eyes
Narrative Responses:
Purpose
To compare the potential visual acuity measured with 2 different potential acuity devices, as well as the post-surgical outcomes following cataract extraction.
Methods
This is a prospective study of 10 cataract patients and 10 control patients with a mean age of 67.9 and 60.3 years who were measured using the Gold Standard Potential Acuity Meter and a new handheld device involving indirect ophthalmoscopy with a 20-diopter lens and a transparent eye chart. The new device allows the direct visualization of the macula during the testing procedure to ensure that the patient is cooperative.
Results
Both potential acuity devices measure similarly within each patient group. Control eyes showed approximately equal visual acuities. In the cataractous group, the potential visual acuity on either device was an excellent predictor of postoperative acuity. This new device is non-inferior to the current gold standard and is a portable, cost-effective method which ensures cooperation from the patient and reduces false negatives.
Conclusion
This new device is non-inferior to the current gold standard and is a portable, cost-effective method which ensures cooperation from the patient and reduces false-negatives.