What Are Cataracts?
Cataracts occur when the eye’s natural lens becomes cloudy, impairing vision. At birth, the lens is clear and flexible, focusing light properly on the retina. Over time, oxidative stress and aging cause lens proteins to degrade and clump, forming cataracts. Most often appearing after age 50, they can cause blurred vision, glare sensitivity, difficulty seeing in low light, and the need for brighter lighting to read. If untreated, cataracts may lead to serious vision loss or blindness.
The only effective treatment is surgical removal of the cloudy lens and replacement with a clear artificial intraocular lens (IOL). This procedure is generally safe and restores vision in most cases.
Cataracts Overview
Lens Choice
Cataract surgery involves replacing the eye's cloudy natural lens with a clear artificial one called an intraocular lens (IOL). The choice of IOL depends on your visual needs, lifestyle, and budget. Here's a concise overview of the main IOL options:
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Standard Monofocal Lens
Monofocal lenses correct vision at a single focal point, usually distance. Patients will likely need glasses for intermediate or near tasks. Insurance usually covers the standard lens.​
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Toric Lens
Toric lenses are designed to correct astigmatism, which is a common condition where the cornea, or the front of the eye, has an irregular shape to it. These lenses improve the eye’s focus to reduce the need for glasses.
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Multifocal & Extended Depth of Focus (EDOF) Lenses
Multifocal lenses have different focal points which help focus light at near, intermediate and far. These lenses can significantly reduce the need for glasses, but can contribute to glare or halos.​
​Extended Depth of Focus (EDOF) lenses have an extended range of focus. These lenses provide a broader range of vision as compared to a standard lens. Patient typically experience better intermediate and far vision, with some benefit to near vision. There is less risk of glare or halo compared to a multifocal lens. It is possible to need reading glasses for very fine print. ​
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​Consult with your surgeon to determine the most suitable IOL based on your visual goals, lifestyle, and eye health.