Comparison of central visual sensitivity between monocular and binocular testing in advanced glaucoma patients using...

Area of Science:

• Ophthalmology
• Visual Neuroscience

Background:

• Glaucoma is a progressive optic neuropathy affecting central and peripheral vision.
• Accurate assessment of visual field sensitivity is crucial for glaucoma management.

Purpose of the Study:

• To compare central visual sensitivity between monocular and binocular conditions in glaucoma patients.
• To evaluate the utility of the imo static perimetry for binocular visual field testing.

Main Methods:

• A cross-sectional study involving 51 patients with open-angle glaucoma.
• Monocular and binocular visual field tests were conducted using the imo perimeter and Humphrey Field Analyzer (HFA).
• Eyes were categorized as 'better' or 'worse' based on visual acuity and sensitivity thresholds.

Main Results:

• Worse eyes exhibited lower central visual field sensitivity under binocular testing compared to monocular testing.
• Better eyes demonstrated greater central visual field sensitivity under binocular testing versus monocular testing.
• Significant differences in mean deviation were observed between better (-5.5 dB) and worse (-18.0 dB) eyes using HFA 24-2.

Conclusions:

• Binocular testing enhances central visual sensitivity in better-seeing eyes but diminishes it in worse-seeing eyes of glaucoma patients.
• While monocular testing remains standard for monitoring, binocular testing may predict the impact of visual field loss on quality of life.