CASTELLS X, COMAS M, ESPALLARGUES M, CASTILLA M, GARCIA-ARUMI J, ALONSO J; International Society of Technology Assessment in Health Care. Meeting.
Annu Meet Int Soc Technol Assess Health Care Int Soc Technol Assess Health Care Meet. 2001; 17: abstract no. 45.
Department of Studies, Municipal Institute of Health Care and Health Services Research Unit, Municipal Institute of Health Research, Barcelona, Spain.
Introduction - The persistent increase of the demand and rate of cataract surgery has lead to a debate about the benefits of surgery in the second eye. The purpose of this study was to assess the benefits of cataract surgery in both eyes (intervention) compared to surgery in only one eye (control).Methods - A two-arm randomized controlled trial has been performed on patients from the ophthalmology departments of two teaching hospitals. Inclusion criteria were bilateral cataracts and indication of first eye cataract surgery (visual acuity not better than 0.4 in either eye). Patients with severe ocular comorbidity were excluded. The main clinical outcomes were binocular logMAR visual acuity, binocular log contrast sensitivity and stereopsis. Perceived health measures were visual function (Visual Function Index VF14) and health status (Short Form SF12). An analysis was performed by comparing the two-month postoperative visits between groups: after the second eye for the intervention group and after the first eye for the control group.Results - Of 307 patients included in the study, 152 were randomized to the intervention group and 155 to the control group, having similar baseline characteristics. Two months postoperatively the intervention group showed better clinical outcomes: visual acuity of 0.14 (0.73 in decimal scale) compared to 0.23 (0.59) (p<0.001); contrast sensitivity of 1.6 compared to 1.5 (p<0.001); 4.8% of patients with no stereopsis (3000 s arc or worse) compared to a 24.1% (p<0.001). Visual function was also better for the both eyes surgery group: 94.8 (9.8) compared to 86.9 (17.3), but health status was not significantly different in either dimensions (physical and mental).Conclusions - This results suggest that patients with bilateral cataracts have higher benefits with second eye surgery, specially for visual function, stereopsis and, to a lesser extent, binocular visual acuity.
Publication Types:
Keywords:
- Cataract
- Cataract Extraction
- Clinical Trials as Topic
- Contrast Sensitivity
- Depth Perception
- Health Status
- Humans
- Lens Implantation, Intraocular
- Vision
- Vision Tests
- Visual Acuity
- surgery
- hsrmtgs
Other ID:
UI: 102274377
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