Duration 5min, Q&A 3min
Progression of Visual Field Defects in Eyes with Different Optic Disc Area Size in Patients with Glaucoma
To investigate the relationship between the optic disc area size and the progression of visual field defects in eyes with Glaucoma.
Forty five patients with Glaucoma, who were being treated with topical antiglaucoma drugs, were studied.
The progression of visual field defects was obtained using Humphrey field analyzer, and reliable images of the optic disc were obtained using a confocal scanning laser ophthalmoscope. The progression of Glaucoma was assessed by the slope of the mean deviations (MDs) obtained from the visual field results collected during the follow-up examinations. The entire group was classified by disc area size into three groups: the small group (I) had a disc area less than 2 mm2, the Medium group (II) had the area value between 2 mm2 and 3 mm2, and the Large group (III) had a disc area greater than 3 mm2. Statistics suggested the relationship between optic disc area size and MDs.
Results and Conclusion
The patients with the Medium group of optic disc had the steepest MDs at -0.45±0.39 dB/year, that of the Small group was -0.30±0.42 dB/year and that of the Large group was -0.07±0.18 dB/year. The optic disc area size correlated with the MDs in patients with the Medium group of optic disc (r=-0.298, y=-0.5205x+0.8029). Statistics indicated the rate of progression of the field defects, the MDs, in patients with the Medium group of optic disc wad possibly dependent on the optic disc area size.
[ Keyword ]
optic disc area size / slope of the mean deviations / glaucoma
[ Conflict of Interest ]