Comparison of the size of YAG flare in implantable contact lens with intraocular lens implantation and peripheral iridectomy

Abstract

Objective To compare the clinical significance of large and small spot YAG in Iridectomy before the Implantable Collamer Lens (ICL) implantation. Methods Seventy cases were randomly divided into group A and B, group A of 34 patients with large YAG spot iris peripheral laser (250um energy, the total energy 11-13mJ at the top 11 o’clock to 1 o’clock direction iris roots perforation of about 1×2mm) group B of 33 cases with small YAG spot iris peripheral laser (100um energy, the total energy 11-13mJ at the top 11 o’clock to 1 o’clock direction iris root perforation of about 1×2mm). Observation of intraocular pressure changes after laser surgery. Results Group A large spot and group B small spot get high intraocular pressure two hours later (Increased IOP 8 mmHg).There was no significant difference between the two groups, intraocular pressure increased 24 hours later (Increased intraocular pressure 8mmHg). Conclusions The small-spot YAG laser in the peripheral iridectomy produces iris depigmentation, causes inflammatory response, increase intraoc-ular pressure. The larger spot YAG laser iridotomy has advantages in hole forming of the iris peripheral edge, it has clinical significance to clinical iridal laser drilling, especially in patients with thicker iris stroma and more pigments. Key words: YAG laser; Peripheral iridectomy; Intraocular pressure