Tim Schultz1, Ina Conrad-Hengerer2, Fritz H Hengerer2, H Burkhard Dick2. 1. From the Center for Vision Science, Ruhr University Eye Clinic, Bochum, Germany. Electronic address: tim.schultz@kk-bochum.de. 2. From the Center for Vision Science, Ruhr University Eye Clinic, Bochum, Germany.
Abstract
PURPOSE: To evaluate intraocular pressure (IOP) during femtosecond laser-assisted cataract surgery using a fluid-filled interface. SETTING: Ruhr University Eye Clinic, Bochum, Germany. DESIGN: Prospective clinical trial. METHODS: The absolute IOP was measured with a modified Schiotz tonometer before and after laser-assisted cataract surgery with and without a fluid-filled interface (Liquid Optics interface, Catalys Precision Laser System). RESULTS: The study evaluated 100 eyes. Tonometry and laser cataract surgery were completed successfully in all eyes. The mean preoperative IOP was 15.6 mm Hg ± 2.5 (SD). Upon application of the suction ring and vacuum, the mean IOP rose to 25.9 ± 5.0 mm Hg and remained nearly constant after the laser procedure (27.6 ± 5.5 mm Hg). After removal of the suction ring, the mean IOP was 19.1 ± 4.4 mm Hg. The IOP 1 hour after surgery was not significantly higher than the preoperative values. CONCLUSIONS: The results indicate a minor increase in IOP using the fluid-filled interface. This is in strong contrast to substantially higher values reported in the literature with flat and curved applanating contact interfaces.
PURPOSE: To evaluate intraocular pressure (IOP) during femtosecond laser-assisted cataract surgery using a fluid-filled interface. SETTING: Ruhr University Eye Clinic, Bochum, Germany. DESIGN: Prospective clinical trial. METHODS: The absolute IOP was measured with a modified Schiotz tonometer before and after laser-assisted cataract surgery with and without a fluid-filled interface (Liquid Optics interface, Catalys Precision Laser System). RESULTS: The study evaluated 100 eyes. Tonometry and laser cataract surgery were completed successfully in all eyes. The mean preoperative IOP was 15.6 mm Hg ± 2.5 (SD). Upon application of the suction ring and vacuum, the mean IOP rose to 25.9 ± 5.0 mm Hg and remained nearly constant after the laser procedure (27.6 ± 5.5 mm Hg). After removal of the suction ring, the mean IOP was 19.1 ± 4.4 mm Hg. The IOP 1 hour after surgery was not significantly higher than the preoperative values. CONCLUSIONS: The results indicate a minor increase in IOP using the fluid-filled interface. This is in strong contrast to substantially higher values reported in the literature with flat and curved applanating contact interfaces.
Authors: Karl Thomas Boden; Martina Mariacher; Kai Januschowski; Katrin Boden; Annekatrin Rickmann; Peter Szurman; Berthold Seitz; Siegfried Mariacher Journal: Int Ophthalmol Date: 2020-06-01 Impact factor: 2.031
Authors: Daniela Alvarez-Ascencio; Carolina Prado-Larrea; Jesus Jimenez-Roman; Rafael Castañeda-Diez Journal: Am J Ophthalmol Case Rep Date: 2021-07-09