An<unk>  is a surgically implanted device to treat damage or absence of the<unk>  of the eye. In 2018, the United States Food and Drug Administration approved the first<unk> , CustomFlex<unk>  developed and produced by HumanOptics Holding AG, made of medical grade silicone. The device improves vision by controlling the amount of light let into the eye. It also improves cosmetic appearance. There are a number of surgical techniques for implanting the prosthetic.
Artificial iris
Retinal implant
Ocular prosthesis
Argus retinal prosthesis
Corrective lens
Trifocal lenses
Pre-Descemet's Endothelial Keratoplasty
Glaucoma surgery