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ASSESSMENT OF 10-DEGREE CENTRAL VISUAL FIELD DEFECTS IN PATIENTS WITH EARLY-STAGE PRIMARY OPEN-ANGLE GLAUCOMA
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Abstract
Patients and Methods: A cross-sectional descriptive study was conducted on 42 patients (60 eyes) diagnosed with early-stage primary open-angle glaucoma. All subjects underwent visual acuity testing, intraocular pressure measurement, clinical examination, visual field testing, and SD-OCT imaging to evaluate retinal ganglion cells and peripapillary retinal nerve fiber layer. Study indicators included: characteristics of the study subjects; characteristics of visual field defects (number, location, shape); correlation of defect location on OCT; and correlation between the depth/width of visual field defects and OCT parameters (RNFL, GCIPL). Results: The mean age was 44.12 ± 17.48 years; mean logMAR visual acuity was 0.25 ± 0.24; mean C/D ratio was 0.61 ± 0.155. Arcuate scotomas accounted for 34.2%; diffuse defects for 5%; and 52.6% of defects were located nasally. Arcuate scotomas showed a correlation between defect depth and width. The 24-2 test missed defects in 36 hemifields. Conclusion: In early-stage glaucoma, 10-2 visual field defects are primarily arcuate scotomas, with the possibility of deep localized or shallow diffuse defects. The 10-2 test may detect defects missed by the 24-2 test.
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Keywords
10-2 visual field, primary open-angle glaucoma, scotoma.
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