1 June 1991 Design characteristics and point-spread function evaluation of bifocal intraocular lenses
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Proceedings Volume 1423, Ophthalmic Technologies; (1991) https://doi.org/10.1117/12.43958
Event: Optics, Electro-Optics, and Laser Applications in Science and Engineering, 1991, Los Angeles, CA, United States
Abstract
Lens extraction during cataract operation has mainly two consequences: first, a reduction of the refractive power of the eye and second, the loss of accommodation. Insertion of a monofocal intraocular lens counterbalances the first effect, accommodation, however, remains lost. Various types of intraocular lenses exhibiting two different focal lengths (bifocal) are at present under clinical trial. With such lenses one focal length corresponds to the far vision (P.) while the other is related to the near vision (P )(Fig. 1). In both cases, however, two images are formed simultaneously in the eye: one is focused on the retina while the other is out of focus. First clinical results indicate that a satisfactory situation can be obtained both in far and near vision.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Pascal O. Rol, "Design characteristics and point-spread function evaluation of bifocal intraocular lenses", Proc. SPIE 1423, Ophthalmic Technologies, (1 June 1991); doi: 10.1117/12.43958; https://doi.org/10.1117/12.43958
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