Severe cases of cataracts typically require the replacement of the natural lens of the eye. This is done by using intraocular lens or IOLs. The IOLs carry out the normal function of the eye’s natural lens, by focusing light that enters the eye through the cornea and pupil, onto the retina. But what else do you need to know about IOLs.
What are IOLs made of?
IOLs are made chiefly from material that is flexible such as silicone, acrylic, and PMMA, and they are usually foldable (learn more).
Types of IOLs
For many years monofocal IOLs (single-focus) were the most common type of lens implants used. As the name suggests, these lens provide only one focus of vision, either near or at a distance, but not both. Most patients prefer having them adjusted for distance vision; therefore they would require the assistance of eyeglasses for near visual tasks like reading.
At the other end of the spectrum are the multifocal IOLs (multiple-focus), which provide clear focus for near tasks, and also at a distance. As a result of this flexibility, some of the patients with multifocal lens implants do not need eyeglasses or contact lens.
Astigmatic lenses are monofocal IOLs that correct astigmatism, which is a condition that causes individuals to see distorted images.
Determining the lens option for you
If you have to undergo cataract surgery, your ophthalmologist will discuss the process with you beforehand, and tell you what you need to know about IOLs. The choice of IOL will depend on your lifestyle and vision needs.
For more information about IOLs and cataract surgery, contact the Center for Ophthalmology and Laser Surgery in Lighthouse, FL. Call 954-786-5353 today to schedule an evaluation with Dr. Michael Loeffler, or go to www.oculaser.com/schedule-an-appointment/.