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Abstract #60439 Published in IGR 16-4
Intraocular pressure during femtosecond laser pretreatment: comparison of glaucomatous eyes and nonglaucomatous eyes
Darian-Smith E; Howie AR; Abell RG; Kerr N; Allen PL; Vote BJ; Toh TJournal of Cataract and Refractive Surgery 2015; 41: 272-277
PURPOSE: To compare changes in intraocular pressure (IOP) during femtosecond laser pretreatment of cataract between glaucomatous eyes and nonglaucomatous eyes. SETTING: Launceston Eye Institute and Launceston Eye Hospital, Launceston, Australia. DESIGN: Nonrandomized interventional prospective case series. METHODS: Patients with clinically stable primary open-angle glaucoma (POAG) having femtosecond laser pretreatment were compared with a concurrent cohort of patients with healthy eyes having the same procedure. Pretreatment was performed using a fluid-filled optical docking system (Liquid Optics Interface). With the patient supine, the IOP was measured at 4 time points using a rebound tonometer (Icare Pro). RESULTS: The study comprised 143 eyes of 97 patients. Forty-three eyes (30.1%) had documented glaucoma. The mean baseline IOP was 20.2 mm Hg ± 4.2 (SD) in glaucomatous eyes and 18.9 ± 4.0 mm Hg in nonglaucomatous eyes (P = .06). The mean change in IOP values between each time frame and baseline was as follows: vacuum-on, 13.8 ± 9.9 mm Hg and 11.1 ± 6.9 mm Hg, respectively (P = .06); after treatment, 17.4 ± 7.4 mm Hg and 14.1 ± 7.2 mm Hg, respectively (P = .014); after undocking of vacuum, 9.9 ± 5.4 mm Hg and 8.7 ± 5.7 mm Hg, respectively (P = .24). CONCLUSIONS: Femtosecond pretreatment caused a greater transient rise in IOP after treatment and a higher residual IOP after vacuum undocking in glaucomatous eyes than in nonglaucomatous eyes. This is well tolerated short term; however, long-term implications for eyes with glaucoma are unknown at present. FINANCIAL DISCLOSURE: No author has a financial or proprietary interest in any material or method mentioned.
From the Launceston Clinical School (Darian-Smith, Howie), University of Tasmania, and the Tasmanian Eye Institute (Darian-Smith, Howie, Abell, Allen, Vote, Toh), Launceston, Tasmania, and the Royal Victorian Eye and Ear Hospital (Abell, Kerr), Melbourne, Victoria, Australia. Electronic address: edar2754@gmail.com.
Full articleClassification:
6.1.3 Factors affecting IOP (Part of: 6 Clinical examination methods > 6.1 Intraocular pressure measurement; factors affecting IOP)
12.12.3 Phacoemulsification (Part of: 12 Surgical treatment > 12.12 Cataract extraction)