Effect of trabeculectomy and Ahmed glaucoma valve implantation surgery on corneal biomechanical changes

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dc.contributor.authorKaderli, Ahmet
dc.contributor.authorDemirok, Gülizar
dc.contributor.authorKaderli, Sema Tamer
dc.contributor.authorÖktem, Çağlar
dc.contributor.authorKarnaz, Ali
dc.contributor.authorÖzen, Doğukan
dc.contributor.authorEkşioğlu, Ümit
dc.date.accessioned2021-02-19T21:16:14Z
dc.date.available2021-02-19T21:16:14Z
dc.date.issued2020
dc.departmentALKÜ
dc.descriptionKaderli, Sema/0000-0003-4851-6527; Eksioglu, Umit/0000-0002-3061-7162
dc.description.abstractPurpose To evaluate alterations in corneal biomechanical properties before and 6 months after conventional trabeculectomy (TRAB) and Ahmed glaucoma valve (AGV) implantation. Methods Thirty-nine eyes of 39 patients were evaluated retrospectively. Complete ophthalmological examinations including evaluation of corneal biomechanical properties using the Ocular Response Analyzer were performed before and after 6 months postoperatively. A mean of four measurements for corneal hysteresis (CH), corneal resistance factor (CRF), Goldmann correlated intraocular pressure (IOPg), and corneal compensated intraocular pressure (IOPcc) was recorded. The participants had undergone trabeculectomy or shunt surgery as the first surgical procedure for glaucoma treatment of uncontrolled IOP with maximum antiglaucoma eyedrops. Results There were 20 eyes of 20 patients in trabeculectomy group and 19 eyes of 19 patients in AGV implantation group. There was no significant difference between two groups in terms of sex, age, eye laterality, lens status, antiglaucoma drug usage, preoperatively measured Mean Deviation of Humphrey Visual Field Analyzer, CH, CRF, IOPcc, and IOPg (p > 0.05). CH and CRF increased significantly after shunt surgery (p < 0.001). CH increased in trabeculectomy group postoperatively (p < 0.001); however, CRF showed a small amount of decrease, but this reduction was not statistically significant (p > 0.05). CH and CRF showed higher increase after AGV surgery than trabeculectomy surgery (p < 0.05). There was no significant correlation between IOP changes and CH-CRF changes in both TRAB and AGV groups (p > 0.05). Conclusion According to our results, surgical technique differences may have an impact on postoperative corneal biomechanical outcomes. AGV surgery offers better corneal biomechanical results than standard trabeculectomy in 6-month follow-up.
dc.identifier.doi10.1007/s10792-020-01367-8
dc.identifier.endpage1947en_US
dc.identifier.issn0165-5701
dc.identifier.issn1573-2630
dc.identifier.issue8en_US
dc.identifier.pmid32300919
dc.identifier.scopusqualityQ2
dc.identifier.startpage1941en_US
dc.identifier.urihttps://doi.org/10.1007/s10792-020-01367-8
dc.identifier.urihttps://hdl.handle.net/20.500.12868/333
dc.identifier.volume40en_US
dc.identifier.wosWOS:000547899200008
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.institutionauthor0-belirlenecek
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofInternational Ophthalmology
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectAhmed glaucoma valve implantation
dc.subjectCornea biomechanics
dc.subjectGlaucoma surgery
dc.subjectOcular response analyzer
dc.subjectTrabeculectomy
dc.titleEffect of trabeculectomy and Ahmed glaucoma valve implantation surgery on corneal biomechanical changes
dc.typeArticle

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