Related Experiment Videos
Glare disability and contrast sensitivity before and after cataract surgery
R Superstein1, D Boyaner, O Overbury
1Department of Ophthalmology, Sir Mortimer B. Davis Jewish General Hospital, McGill University, Quebec, Canada.
Journal of Cataract and Refractive Surgery
|March 1, 1997
Summary
Brightness-induced glare significantly impacts visual function in cataract patients. Post-surgery, contrast sensitivity and visual acuity improve, resolving functional complaints.
Area of Science:
- Ophthalmology
- Vision Science
Background:
- Cataract surgery is a common procedure to restore vision.
- Some patients experience functional visual complaints despite good visual acuity.
- The impact of glare on visual function in these patients requires objective assessment.
Purpose of the Study:
- To evaluate if brightness-induced glare affects spatial contrast sensitivity and visual acuity in preoperative cataract patients with functional complaints.
- To compare visual function before and after cataract surgery.
Main Methods:
- Twenty patients with visual acuity of 20/70 or better and no other ocular pathology were included.
- The Optec 3000 vision tester was used to assess contrast sensitivity and visual acuity with and without glare.
- Testing was performed preoperatively and at 1 and 3 months postoperatively.
Main Results:
- Statistically significant interactions were found between preoperative/postoperative status and glare/no-glare conditions.
- Postoperative visual acuity and contrast sensitivity improved to normal levels.
- No significant differences in visual acuity or contrast sensitivity were observed between 1 and 3 months postoperatively.
Conclusions:
- Spatial contrast sensitivity and glare testing offer objective measures for patients with good visual acuity but functional complaints.
- Cataract surgery effectively improves visual function, including contrast sensitivity and acuity, in the presence of glare.