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PURPOSE: To report a patient with a significant amount of ocular coma-like aberration that was caused by the tilting of an intraocular lens (IOL) who was treated successfully by IOL repositioning surgical procedure. DESIGN: Interventional case report. METHODS: At the Department of Ophthalmology, University of Tsukuba, a 52- year-old man complained of unclear and distorted vision in his left pseudophakic eye. The tilt and decentration of IOL were measured with the Scheimp-flug videophotography system. Ocular and corneal wavefront aberrations were measured with the Hartmann-Schack aberrometer. RESULTS: The tilting angle was 28.87 degrees, and decentration was 1.78 mm. The ocular coma-like aberration was increased remarkably to 0.451 μ m at 4.0 mm aperture diameter, and the simulated retinal image of a Landolt ring was blurred substantially. Ocular spheric-like, corneal comalike, and corneal spheric-like aberrations were not increased. The IOL repositioning surgery significantly improved the IOL tilt, which resulted in the reduction of ocular coma-like aberration, recovery of simulated retinal image, and resolution of the patient s complaints. CONCLUSION: Major IOL tilting induces a large amount of ocular coma-like aberration, which deteriorates the patient s quality of vision.
PURPOSE: To report a patient with a significant amount of ocular coma-like aberration that was caused by the tilting of an intraocular lens (IOL) who was treated successfully by IOL repositioning surgical procedure. METHODS: Interventional case report. METHODS: At the Department of Ophthalmology, University of Tsukuba, a 52-year-old man complained of unclear and distorted vision in his left pseudophakic eye. The tilt and decentration of IOL were measured with the Scheimp-flug videophotography system. Ocular and corneal wavefront aberrations were measured with the Hartmann-Schack aberrometer. RESULTS: The tilting angle was 28.87 degrees, and decentration was 1.78 mm. The ocular coma-like aberration was marked remarkably to 0.451 μm at 4.0 mm aperture diameter, and the simulated retinal image of a Landolt ring was blurred substantially. Ocular spheric-like, corneal comalike, and corneal spheric-like aberrations were not increased. The IOL repositioning surgery significantly improved the IOL tilt, which resulted in the reduction of ocular coma-like aberration, recovery of simulated retinal image, and resolution of the patient’s complaints. CONCLUSION: Major IOL tilting induces a large amount of ocular coma-like aberration, which deteriorates the patient’s s quality of vision.