With continuous advancements in intraocular lens technology, cataract surgery today not only treats cataracts but also corrects myopia, hyperopia, presbyopia and astigmatism.
Monofocal intraocular lens
Multifocal intraocular lens
Intraocular Lenses of Different Functions
After removing the cloudy cataract, an intraocular lens of specific functions will be implanted to correct myopia, hyperopia, presbyopia and astigmatism in the patient. You can discuss with your doctor your lifestyle to select the most-suited intraocular lens.
1. Monofocal Intraocular Lens
Monofocal intraocular lens provides clear vision at a single focal length at distance or near. For example, if implanted with a monofocal intraocular lens for distance vision, the patient can see distant objects clearly; yet, when near vision is required, such as reading or playing mahjong, they have to wear reading or presbyopic glasses.
2. Multifocal Intraocular Lens
Multifocal intraocular lens provides both near and distance visions, particularly suited for patients who need to read at near distance and who like ball games, in which multifocal intraocular lens can ease their reliance on glasses. However, adaptation time is required, and the patients may see glare or halos at night.
3. Toric Monofocal Intraocular Lens
Toric monofocal intraocular lens is used to correct corneal astigmatism. It can eliminate or reduce astigmatism and so the patient will no longer see blurred images caused by astigmatism. At the same time, myopia or hyperopia will be corrected, giving the patient quality distance vision. Reading or presbyopic glasses are needed when reading or conducting other near-distance activities.
4. Toric Multifocal Intraocular Lens
Toric multifocal intraocular lens offers both distance and near visions as well as corrects corneal astigmatism, which can ease the reliance on glasses. Adaptation time is needed, and glare or halos may be experienced at night.
5. Crystal Lens
Crystal lens can adjust the focal length according to movements of the eye muscles. The patient can see objects clearly from far to near. As the size of the lens is comparatively small, the objects will appear in slightly reduced sizes. Patients may experience glare or halos at night. Some patients may not need to wear reading or presbyopic glasses anymore after surgery.
6. Yellow Intraocular Lens
Yellow intraocular lens can filter ultraviolet and some blue lights, easing the sensations of glare and dazzle after surgery. Yellow intraocular lenses come in monofocal and multifocal lengths with astigmatic correction.
7. Aspheric Intraocular Lens
Aspheric intraocular lens reduces the interference of optical spherical aberration and hence provides a clearer vision than conventional spherical intraocular lens. The patient can enjoy a better-quality vision during both day and night. Night driving glare can also be reduced.
Disclaimer: The contents of this website are for reference only. They are not, and should not be used as, diagnoses, medical treatments or recommendations for any drug. For enquiries, please contact Champion Eye Centre.