Laser peripheral iridotomy (LPI) is indicated to prevent or overcome a suspected relative pupillary block by creating an alternative pathway for aqueous flow. Mainly used for patients in the primary angle closure sp… 展开

The following contraindications should be managed prior to performing an LPI. 1. Ocular media opacities (e.g. corneal edema, anterior chamber inflammation) 2. High risk eyes (e.g. very shallow or flat anterior chamber… 展开

The following recommendations should be followed in order to safely and effectively perform an LPI: 1. Apply pilocarpine 2%-4% to cause miosis, reduce iris thickness and facilitate perforation. 2. In the presence of corneal edema, … 展开

Iridotomy can be accomplished using the photodisruptive Q-switched Nd:YAG laser (Nd:YAG) or the photo-thermal Nd:YAG-KTP 532 nm (which is still often called Argon laser) and solid-state lasers. The two laser types may … 展开