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Abstract #75369 Published in IGR 19-2
Glaucoma surgery and induced astigmatism: a systematic review
Chan HHL; Kong YXGEye and vision (London, England) 2017; 4: 27
BACKGROUND: The refractive outcomes of glaucoma surgeries, particularly their effect on astigmatism, are incompletely understood. MAIN BODY: Trabeculectomy is associated with a considerable amount of with-the-rule astigmatic change in the immediate postoperative period. This is followed by a gradual against-the-rule shift. These changes are altered with the use of mitomycin C (MMC). Non-penetrating surgery such as deep sclerectomy is also associated with a similar or smaller degree of induced astigmatism. Minimally invasive glaucoma surgery appears to be astigmatically neutral. There is no clear evidence regarding refractive outcomes of glaucoma drainage device surgery. CONCLUSIONS: Induced astigmatism may account for a reduction in unaided visual acuity in the early postoperative period following a successful trabeculectomy. These changes appear to stabilise at 3 months, and it would be prudent to defer the prescription of new glasses until this time. If sequential cataract surgery is to be performed, toric intraocular lenses can be a useful option for astigmatic correction.
Royal Victorian Eye and Ear Hospital, 32 Gisborne St, East Melbourne, VIC 3002 Australia.
Full articleClassification:
2.2 Cornea (Part of: 2 Anatomical structures in glaucoma)
12.8 Filtering surgery (Part of: 12 Surgical treatment)