Aspheric
The study of optics has been taking place even before Galileo viewed Jupiter’s moons through an early telescope. With our modern technology, highly detailed assessment of optical systems can be completed. These detailed assessments show that the normal visual system has irregularities that slightly degrade visual images under certain circumstances. Previous standard intraocular lens implants were unable to account for or balance these minor irregularities. Newer technology, known as an aspheric IOL, is designed to help balance some of the small imperfections in the optical system. An aspheric IOL can improve the clarity of vision under certain circumstances — by improving contrast sensitivity it may make it easier to see clearly under dim illumination such as driving at dusk or in the fog.
Aspheric IOL’s may not be a good option for every patient as there are certain circumstances where no useful benefit would be noticed or, in rare circumstances, the vision could even be less clear with this implant type. Current models of aspheric IOLs include:
- Tecnins (AMO)
- IQ (by Bausch and Lomb)
- ReStore (Alcon)
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