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[Corneal astigmatism following trabeculectomy]
1Zhongshan Ophthalmic Center, Sun Yat-sen University of Medical Sciences, Guangzhou.
[Zhonghua Yan Ke Za Zhi] Chinese Journal of Ophthalmology
|September 1, 1996
Summary
Trabeculectomy, a glaucoma surgery, can induce with-the-rule corneal astigmatism. This surgically induced astigmatism often decreases over time in most patients.
Area of Science:
- Ophthalmology
- Corneal Physiology
- Surgical Outcomes
Context:
- Trabeculectomy is a common surgical procedure for glaucoma.
- Changes in corneal astigmatism post-surgery can impact visual outcomes.
- Understanding these changes is crucial for patient management.
Purpose:
- To investigate the changes in corneal astigmatism after trabeculectomy.
- To quantify the incidence and magnitude of astigmatism induced by the surgery.
- To observe the temporal trends of corneal astigmatism post-trabeculectomy.
Summary:
- Corneal astigmatism was evaluated in 42 eyes before and after trabeculectomy.
- Early post-operative results showed predominantly with-the-rule astigmatism, with 41.03% exceeding 2.00D.
- At 3 months, 17.50% shifted towards against-the-rule, and 9.50% had persistent, surgery-induced astigmatism over 2.00D.
Impact:
- Trabeculectomy can induce with-the-rule corneal astigmatism.
- Corneal astigmatism generally decreases over time post-surgery.
- Findings inform pre-operative counseling and post-operative care strategies for glaucoma patients.