Related Experiment Video
Updated: Aug 15, 2026

Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter
Published on: September 16, 2025
Ocular higher-order wavefront aberration caused by major tilting of intraocular lens
Tetsuro Oshika1, Keisuke Kawana, Takahiro Hiraoka
1Department of Ophthalmology, Institute of Clinical Medicine, University of Tsukuba, Tennoudai, Ibaraki, Japan. toshika@md.tsukuba.ac.jp
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 Scheimpflug 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 microm at 4.0 mm aperture diameter, and the simulated retinal image of a Landolt ring was blurred substantially. Ocular spheric-like, corneal coma-like, 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.
Related Concept Videos
Focusing of Light in the Eye
Glaucoma: Overview
Angle Closure Glaucoma: Treatment
Open Angle Glaucoma: Treatment
Drugs such as carbonic anhydrase inhibitors, α2- and...
Accessory Structures of the Eye
Muscles of the Eye
Extraocular Muscles
The six extraocular muscles surround the eyeball and control its movements. They are responsible for a wide range of eye motions, including looking up, down, left, right, and rotating...
