This study was conducted with the purpose to compare central visual sensitivity under monocular and binocular conditions in patients with glaucoma using the new IMO static perimeter.
It was a cross-sectional study that included 51 consecutive eyes of 51 patients with open-angle glaucoma who were affected with at least one significant point in the central 10° were examined. Monocular and binocular random single-eye tests were performed. The eyes were assigned to ‘better’ and ‘worse’ categories based on the visual acuity and central visual thresholding. Central visual sensitivity results were obtained and compared.
The mean sensitivity in the central 4 points of the VF of the worse eyes was lower when measured under the binocular eye condition than under the monocular condition.
The study concluded through its findings that the central sensitivity of the better eyes was better and that of the worse eyes poorer with binocular testing than with monocular testing in patients with glaucoma. Although monocular VF testing is still the most straightforward means to monocularly monitor glaucoma in clinical settings, binocular testing, such as provided with IMO perimetry, may be a useful clinical tool to predict the effect of VF impairments on a patient’s quality of visual life.
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