Pupiloplasty

Curing disease: Indication After cataract extraction or intraocular lens implantation, there may be a complication that seriously affects vision, that is, the pupil moves up and deforms, causing the pupil to deviate from the visual axis. Sometimes the deformed pupil edge adheres to the posterior capsule or the intraocular lens, showing a fixed state. This condition affects both vision and further examination and treatment of fundus diseases, and requires pupillary angioplasty. Surgical procedure The purpose of Nd:YAG laser treatment is to open the enlarged pupil and extend it to the visual axis, so it is easy to cause bleeding during operation. For this reason, it is necessary to perform heavier extensive argon laser photocoagulation in the proposed incision area before surgery, especially the position of the pupil sphincter. The pupil sphincter is a tissue that is difficult to cut, and contains a small arterial ring, so it is very easy to bleed. If treatment begins with the sphincter, once it causes a major bleeding, it will affect further treatment. Therefore, the best incision sequence is to start from the peripheral part, gradually expand to the pupil sphincter, and finally cut the sphincter.