Visual Limitations Assessment in Patients with Glaucoma

青光眼患者視力障礙之評估

呂大文(Da-Wen Lu) ； George L. Spaeth

《中華民國眼科醫學會雜誌》 36卷3期 (1997/09) Pp. 157-163

https://doi.org/10.30048/ACTASOS.199709.0001

摘要

Purpose: To explore the relationship between visual field loss and the perception of visual disabilities in patients with glaucoma.
Methods: A questionnaire designed to identify vision-associated limitations in daily activities (VALDA) was applied to 231 patients with glaucoma who had reliable computerized visual field examination with the Humphrey 24-2 program. Visual field loss was quantitatively (”mean deviation” (MD) and ”pattern standard deviation” (PSD)) and qualitatively (pattern of visual field defect) assessed. The relationship between the presence of VALDA and visual field defects was evaluated.
Results: The most frequently reported VALDA was limitation in night driving. Age and visual acuity (VA) were related to the perception of VALDA. The visual field index MD in cases with VA better than 20/40 in both eyes correlated well to the perception of VALDA (P＜0.01), but PSD did not (P＞0.2). Among the patterns of visual field loss, patients with bilateral fixation involvement, or the presence of inferior arcuate scotomas or central island defects in both eyes were frequently associated with near vision problems (89%). No other combination of visual field patterns was found to correlate with a specific limitation.
Conclusion: The presence of vision-associated limitations in daily activities in patienst with good visual acuity was correlated with the MD index but not to the PSD. The perception of VALDA does not necessarily correlate with the pattern of visual field loss.

並列摘要

Purpose: To explore the relationship between visual field loss and the perception of visual disabilities in patients with glaucoma.
Methods: A questionnaire designed to identify vision-associated limitations in daily activities (VALDA) was applied to 231 patients with glaucoma who had reliable computerized visual field examination with the Humphrey 24-2 program. Visual field loss was quantitatively (”mean deviation” (MD) and ”pattern standard deviation” (PSD)) and qualitatively (pattern of visual field defect) assessed. The relationship between the presence of VALDA and visual field defects was evaluated.
Results: The most frequently reported VALDA was limitation in night driving. Age and visual acuity (VA) were related to the perception of VALDA. The visual field index MD in cases with VA better than 20/40 in both eyes correlated well to the perception of VALDA (P＜0.01), but PSD did not (P＞0.2). Among the patterns of visual field loss, patients with bilateral fixation involvement, or the presence of inferior arcuate scotomas or central island defects in both eyes were frequently associated with near vision problems (89%). No other combination of visual field patterns was found to correlate with a specific limitation.
Conclusion: The presence of vision-associated limitations in daily activities in patienst with good visual acuity was correlated with the MD index but not to the PSD. The perception of VALDA does not necessarily correlate with the pattern of visual field loss.

並列關鍵字

Glaucoma ； Visual Field ； Vision-associated Limitations in Daily Activities VALDA ； Mean Deviation