Correlation analysis of visual field thresholds and scanning laser ophthalmoscopic optic nerve head measurements in glaucoma.
In a cross-sectional study of 50 consecutive primary open-angle glaucoma cases, full threshold 30-2 visual fields on Humphrey Visual Field Analyser were correlated to stereometric parameters obtained using a scanning laser ophthalmoscope (HRT II). The strength of linear correlation between the stereometric parameters and visual thresholds was used to generate a correspondence map between the optic disc and the visual field. Rim/disc area ratio and cup/disc area ratio correlated with the visual thresholds at the highest number of points in the visual fields. Thresholds at superior hemifield locations correlated best with the rim/disc area ratio and cup/disc area ratio in the inferonasal sector and the ones in the inferior hemifield correlated best with the rim/disc area ratio and cup/disc area ratio in the superotemporal sector. Optic disc parameters correlated better with inferior field locations and non-edge points than superior field locations and edge points. The data indicate that rim/disc area ratio and cup/disc area ratio measurements on HRT II have a good correlation with visual field damage seen on automated visual fields.
Gulati
Vikas
V
Massachusetts Eye and Ear Infirmary, Boston, MA 02114, USA.
Agarwal
Harish C
HC
Sihota
Ramanjit
R
Saxena
Rohit
R
D000328:Adult; D005260:Female; D005902:Glaucoma, Open-Angle / Q000175:diagnosis*; D006801:Humans; D008297:Male; D018613:Microscopy, Confocal; D008875:Middle Aged; D019721:Ophthalmoscopes; D009898:Optic Disk / Q000473:pathology*; D012684:Sensory Thresholds; D058609:Visual Field Tests / Q000295:instrumentation / Q000379:methods; D014794:Visual Fields