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Long-term follow-up of initially successful trabeculectomy
T C Chen1, J T Wilensky, M A Viana
1University of Illinois at Chicago Eye and Ear Infirmary, Department of Ophthalmology and Visual Sciences, USA.
Ophthalmology
|July 1, 1997
Summary
Long-term success of trabeculectomy surgery for glaucoma decreases over time. Even with initial success, intraocular pressure control and disease progression can worsen years later.
Area of Science:
- Ophthalmology
- Glaucoma Research
- Surgical Outcomes
Background:
- Trabeculectomy is a common surgical procedure for glaucoma.
- Initial success is often defined by intraocular pressure (IOP) control at one year post-surgery.
- Long-term outcomes beyond the first year are critical for sustained disease management.
Purpose of the Study:
- To evaluate the long-term efficacy of primary trabeculectomies that demonstrated success at the one-year mark.
- To assess the durability of IOP control and prevention of glaucomatous damage over an extended follow-up period.
Main Methods:
- Retrospective analysis of 40 patients (40 eyes) who underwent primary trabeculectomy.
- Inclusion criteria: successful IOP control at 1 year and a minimum follow-up of 10 years (range 10-21 years).
- Evaluation of IOP, disease progression (cup-disc ratio, visual fields), and need for further surgery at 5, 10, and 15 years.
Main Results:
- Probability of sustained IOP control: 82% at 5 years, 67% at 10 and 15 years.
- Probability of sustained disease progression control: 77% at 5 years, 61% at 10 years, 48% at 15 years.
- Need for further surgery: 90% avoided at 5 years, 75% at 10 years, 67% at 15 years. 40% required cataract extraction.
Conclusions:
- Initial one-year success of trabeculectomy does not guarantee long-term IOP control or prevent glaucoma progression.
- Glaucomatous damage can continue to progress over time, necessitating ongoing monitoring and management.
- Surgical success requires long-term evaluation beyond the first postoperative year.