Arch height ICL is normally 250-750 μm. Arch height is the distance between the apex of the anterior surface of the lens and the posterior surface of the ICL, less than 250 μm is considered as low arch height and more than 750 μm is considered as high arch height. ICL is safe and stable in correcting myopic refractive error and has great superiority in improving visual acuity and visual quality. Arch height has become an important indicator for evaluating ICL surgery. If the arch height is too low, it will affect the metabolism of the lens, which will directly lead to clouding under the anterior capsule. If the arch height is too high, it may cause friction to the iris or stimulate the closure of the atrial angle, resulting in glaucoma, and may even cause corneal endothelial dysfunction. In daily life, attention should be paid to the protection of the eyes, appropriate eye use, avoid looking at cell phones, computers, etc. for a long time. Eye massage can be performed to relieve eye fatigue, and proper exercise should also be performed to enhance the body’s immunity. If the arch high ICL is not normal, it is recommended to consult a doctor in time and follow the doctor’s instructions for reasonable medication.