ICL implantation surgery allows many people who are unable to undergo laser surgery for myopia to successfully remove their glasses and achieve permanent vision correction. However, the surgery involves putting something inside the eye, so there are many concerns and worries. Today, let’s talk about those worries about ICL implantation surgery, is it really necessary? Will the intraocular pressure rise after ICL implantation? Many patients worry about whether ICL implantation will cause an increase in intraocular pressure. It is true that any surgery has its advantages and disadvantages, and IOL implantation can cause a short period of elevated IOP, but the surgeon will try to minimize the problem of elevated IOP caused by the surgery through precise pre-operative measurements and iris perforation. Because the ICL is implanted into the space between the iris and the lens, the procedure requires the patient to have an anterior chamber depth of 2.8 mm or more. Just like a shoe insole, the shoe is big enough for an insole so that it doesn’t feel cramped. In addition, the surgeon will precisely measure the data needed for the surgery, such as the anterior chamber depth of the eye, to customize the most appropriate lens for the patient, much like how big the foot is for the right size shoe. In addition, a laser hole is made in the iris to allow the atrial fluid to flow properly so that the IOP does not rise too high. The new generation ICL has a small hole in the center so that the atrial fluid can flow naturally through the hole, eliminating the need for an atrial fluid drainage channel and effectively controlling the incidence of high IOP after surgery. Will a hole in the iris cause light leakage? In principle, a hole in the iris will cause light leakage and patients will experience glare after surgery. But it depends on how big the hole is and where it is made. The larger the hole, the better the atrial flow, but the more severe the glare may be. There are two ways to solve this problem. First, weigh the pros and cons and make the right size hole or use the newest lens with a central hole to avoid iris perforation; second, make the hole on the periphery of the iris as much as possible so that the small hole is blocked by the upper eyelid after surgery and will not cause glare. So, you don’t have to worry too much. Is ICL implantation safe? Will it cause cataracts? ICL itself is very safe and does not react with other tissues in the eye. It is also implanted behind the iris, so it has very little effect on the corneal endothelium. However, since the ICL is placed in front of my own lens, will the procedure cause clouding of my own lens and lead to cataracts? The risk of cataract is very low because the ICL and the own lens are at a certain distance and the two will not stick together; moreover, by making a hole or choosing a lens with a hole, the flow of atrial water can be ensured and the nutrient supply of the own lens will not be affected, so the risk of cataract is very low. And even if you get a cataract, you can take out the ICL and have cataract surgery again. And, as people age, even without ICL implantation, their crystals will degenerate, and after the age of 40 or 50, they will have more or less cataracts. Will the ICL stick to my own lens? ICL implantation is not simply a matter of placing the lens inside the eye. The surgeon has to do a lot of preparation work before and after the surgery, and precisely measure the data of the patient’s eye to customize the lens so that it is not too big or too small and hangs just between the iris and the lens, keeping a certain distance from your own lens. Moreover, there is atrial water flowing in the eye, which acts as a nourishment and barrier for your own lens, so the ICL will not stick to your own lens. Does having a baby cause the lens to shift or fall out? There is no evidence that ICL and the medication used before and after the procedure can cause fetal malformations. However, for safety reasons, the procedure is best avoided during pregnancy and breastfeeding. Women can stop taking medication for one month after the procedure and then get pregnant or have the procedure after the breastfeeding period. In fact, not only ICL implantation surgery, but any other surgery is not recommended to be performed in the perinatal period. Many patients worry that if they have the surgery first and then have the baby, the ICL may shift or fall out during the delivery. Many athletes usually play a lot of sports, and their lives and sports are not affected after this surgery.