Intraocular Lens Implants (IOLS)
Cataract surgery is the removal of the cataract with an implantation of a new artificial lens, also known as an intraocular lens (IOL). This lens has a prescription to it, like a contact lens, but sits within the eye. The goal of cataract surgery is to give patients sharper vision, less glare, and better clarity of vision. Some patients will be able to see well without glasses for some activities, but many patients will still need glasses for other activities.
The prescription power of the selected IOL determines the ultimate prescription of the eye: farsighted (seeing best at a distance) or nearsightedness (seeing best close up). If a patient chooses to be farsighted, the close up vision can still be corrected with glasses and vice versa for nearsightedness. Astigmatism refers to the shape of the cornea and can make vision blurry at both distance and near if not corrected. Astigmatism can either be corrected after surgery with glasses or contact lenses or it can be corrected at the time of surgery with custom incisions made with the femtosecond laser (lower amounts of astigmatism) or an astigmatism-correcting IOL called a toric IOL (for higher amounts of astigmatism). The power of the IOL is determined with eye measurements that the patient receives in the initial consultation. The surgeon then discusses with the patient his/her vision needs to determine what IOL to place in the patient’s eye, for example how they want to see after surgery without glasses. Cataracts do not grow back and this lens will stay with you for the rest of your life.
There are four different types of IOLs available to patients:
Standard monofocal IOL
Toric monofocal IOL (gives either distance or near vision with astigmatism correction) *Premium Lens*
Multifocal IOL (gives a range of vision from distance to near without astigmatism correction): must not have other conditions in the eye like severe dry eye, corneal scarring, glaucoma, and/or retinal diseases *Premium Lens*
Toric multifocal IOL (gives a range of vision from distance to near with astigmatism correction): must not have other conditions in the eye like severe dry eye, corneal scarring, glaucoma, and/or retinal diseases *Premium Lens*