Cataract lenses, also known as intraocular lenses (IOLs), are primarily made of silicone or acrylic, which are types of plastic. Many IOLs also have a special coating to protect the eyes from harmful ultraviolet (UV) rays.
Types of IOL Materials
- Silicone: Known for its flexibility and durability.
- Acrylic: Hydrophobic acrylic IOLs, like AcrySof, are currently the most widely used material. These are composed of cross-linked polymers.
- Other plastic compositions: While silicone and acrylic are the most common, other plastic materials may also be used.
IOL Construction and Safety
It's important to note that the silicone used in IOLs is a solid polymer, unlike the liquid silicone used in some other medical implants. This solid form ensures biocompatibility and prevents leakage.
The selection of the IOL material is determined by many factors, including the patient's individual needs and the surgeon's preferences. The choice of material doesn't affect the overall effectiveness of the procedure in restoring vision.
