An intraocular lens (or IOL) is a tiny, artificial lens for the eye which will replace the ageing natural lens. It replaces the eye’s natural lens that is eliminated throughout cataract surgical treatment.
The lens flexes (refracts) light rays that go into the eye, aiding you to see. Your lens should be clear. Yet if you have a cataract, your lens has become cloudy due to ageing. Objects look fuzzy, hazy or less colorful when you have a cataract. Cataract surgery removes this cloudy lens and also replaces it with a clear IOL to enhance your vision.
IOLs can be found in different focusing powers, just like prescription eyeglasses or contact lenses to see objects at various, different distances. Your eye doctor will certainly measure the length of your eye and also the curvature of your cornea for a suitable type of lens. These measurements are made use of to set your IOLs focusing power as well as choice of lens type.
What are IOLs made of?
Many IOLs are made from silicone, acrylic, or various other plastic compositions. They are also covered with a special material to help safeguard your eyes from the sunlight’s unsafe ultraviolet (UV) rays.
The most typical type of lens made use of with cataract surgical treatment is called a mono-focal IOL. It has one focusing range. It is readied to focus for up close, medium range or distance vision. The majority of people have them set for clear distance vision. After that they wear spectacles for reading or close up jobs.
Some IOLs have various focusing powers within the same lens. These are called multifocal as well as accommodative lenses. These IOLs lower your reliance on glasses by providing you with clear vision for more than one distance range.
These IOLs give both distance and also near focus at the same time. The lens has actually different zones set at various powers.
These types of lens implants move or change shape inside your eye, permitting focusing at different distances by the same lens and come closest to your natural lens.
For people with astigmatism, there is an IOL called a toric lens implant, which not only remedies the cataract but also take care of your astigmatism issue. Astigmatism is a refractive error triggered by an uneven curvature in your cornea or lens. The toric lens is designed to remedy that refractive error.
As you prepare for your cataract surgical treatment, speak to your ophthalmologist about your vision needs as well as expectations. She or he will explain IOL options for you in even more detail.