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IOP increase minor in femtosecond cataract surgery using fluid interface
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Femtosecond laser-assisted cataract surgery using a fluid-filled interface resulted in a slight increase in IOP, according to a study.
“This is in strong contrast to substantially higher values reported in the literature with flat and curved applanating contact interfaces,” the study authors said.
The prospective clinical trial included 100 eyes that underwent femtosecond laser-assisted cataract surgery with the Catalys Precision Laser System (OptiMedica), which has a Liquid Optics interface. The Stellaris platform (Bausch + Lomb) was used to perform phacoemulsification.
A Goldmann tonometer was used to measure IOP before and after surgery. A modified Schiotz tonometer was used to measure absolute IOP during surgery.
Mean preoperative IOP was 15.6 mm Hg. Mean total suction time was 3 minutes, 45 seconds.
Study results showed that mean IOP was 25.9 mm Hg during application of the suction ring and vacuum, 27.6 mm Hg after the laser procedure, 19.1 mm Hg after removal of the suction ring and 14.3 mm Hg 1 hour after surgery. The difference between IOP before surgery and 1 hour after surgery was not significant.
IOP increased a mean 10.3 mm Hg after vacuum was applied, the authors said.
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