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PubMed · 16240270

[Inflammatory glaucomas].

M Grüb·C M Deuter·M Zierhut
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Abstract

The prevalence of glaucoma in patients with intra- or extraocular inflammation is five to twenty percent. The etiopathogenesis is manifold, including classical secondary open and closed angle mechanisms as well as specific inflammatory elements. Diagnosis and follow-up studies of inflammatory glaucomas are often difficult. The therapeutic options are limited or are poorly evaluated. The development of a secondary glaucoma is a severe complication of intra- or extraocular inflammation and may even lead to blindness. Further investigations, especially with regard to the treatment of inflammatory glaucomas, are necessary to improve the prognosis.

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GlaucomaHumansPractice Guidelines as TopicPractice Patterns, Physicians'PrognosisScleritisTreatment OutcomeUveitisEnglish AbstractJournal ArticleReview

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BibTeXRIS

M Grüb, C M Deuter, M Zierhut. 2005. [Inflammatory glaucomas].. https://doi.org/10.1055/s-2005-858310

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Do scleral flap dimensions influence reliability of intraocular pressure control in experimental trabeculectomy?

AIM: To compare the effect on intraocular pressure (IOP) of large vs small scleral flap size during trabeculectomy using adjustable sutures. METHODS: Trabeculectomy operations were performed on nine donor human eyes connected to a constant flow infusion with real-time IOP monitoring. Large scleral flaps (4 x 4 mm, 16 mm(2), n=12) or small scleral flaps (3 x 2 mm, 6 mm(2), n=9) were constructed over 0.76 mm(2) sclerostomies. For each procedure, equilibrium IOP was measured following tight closure with two four-throw adjustable 10-0 nylon sutures. RESULTS: Five scleral flaps were thin or poorly constructed; four of these were in the initial seven procedures, implying learning effect. These had a mean absolute IOP of 7.6 mmHg (range 2.7-12.4 mmHg) and mean relative IOP of 28.3% of baseline (range 10-45.8%) after closure. In the remaining 16 good quality procedures, mean IOP was 1.3 mmHg (range 0-3.4 mmHg) after sclerostomy, confirming minimal outflow resistance before closure. Following flap closure mean IOP was 20 mmHg (SD 4.4, range 15.5-29.3 mmHg) for large (n=8), and 18.7 mmHg (SD 3.6, 15.9-25.8 mmHg) for small (n=8) flaps (unpaired t-test, P=0.26). Mean IOP (% baseline) was 71.6% (SD 8.4, range 60.6-86.6%) and 66% (SD=12.7, 46.8-86.6%) for large and small flap groups, respectively (unpaired t-test, P=0.2). CONCLUSIONS: Well-constructed scleral flaps of both sizes were able to support an average IOP at least two-thirds of baseline, and both had similar absolute IOP levels. Errors in flap construction resulted in loss of IOP control. Smaller flap size does not appear to compromise control of early postoperative IOP using adjustable sutures.

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