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First Author: L.Thean SINGAPORE
Co Author(s): K. Nagahara
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The purpose of the study was to assess docking capability, suction and corneal distortion of a size-optimized Liquid Optics Interface for laser cataract surgery.
NUHS, Singapore and Santamaria Eye Clinic, Japan
11 Japanese patient eyes were docked with a new size-optimized 2 piece Liquid Optics patient interface on a system for laser cataract surgery (Catalys, OptiMedica, Sunnyvale, CA). Patient fissure widths from lateral to medial canthus were tabulated. The first step of docking consisted of application of the non-applanating suction ring. Docking technique and centration were noted and compared to the standard-sized Liquid Optics Interface. Difficulty achieving suction was noted. After suction was achieved, patients were asked to apply force to the interface by moving eye in all directions and by shutting eyelids. This enabled testing of the docking and suction quality. Any cases of suction loss and suction break were noted. The suction ring was then captured with a disposable lens that was attached to the system. Full volume 3D OCT was used to acquire images of the anterior segment through the posterior capsule. Images were assessed by 5 independent ophthalmologists for corneal folds and distortion.
Suction was successfully achieved in all cases in patients with fissure widths ranging from 20-35 mm. A patient with 20mm palpebral fissure widths was successfully docked twice. In one of these docking attempts a minor suction leak was observed. This case occurred while the patient was intentionally attempting to apply force to the eye by closing eyelid and moving eye. Full volume 3D OCT was collected. 24 OCT images, analyzed by 5 independent ophthalmologists, revealed 0 corneal folds or distortions that could impact laser cutting.
A new Liquid Optics Interface optimized for patients with small palpebral fissures was used to dock Japanese patients. Successful docking and suction can be achieved in this patient population with no noticeable corneal folds or distortions. This new non-applanating interface for laser cataract surgery should enable successful treatment of all patients with small palpebral fissures.