**Question:** Laser trabeculoplasty is indicated in which of the following?

**Core Concept:** Laser trabeculoplasty is a non-surgical procedure used to treat open-angle glaucoma. It involves using a laser to stimulate the trabecular meshwork, increasing aqueous humor outflow and lowering intraocular pressure (IOP).

**Why the Correct Answer is Right:**

Laser trabeculoplasty is rightly indicated in cases of primary open-angle glaucoma (POAG), as it helps in decreasing intraocular pressure (IOP) by stimulating the trabecular meshwork, enhancing aqueous humor outflow, and preserving the integrity of the ocular structures.

**Why Each Wrong Option is Incorrect:**

A. Laser trabeculoplasty is not indicated in cases of angle-closure glaucoma (ACG) because the trabecular meshwork is not involved in this type of glaucoma. Instead, angle recession or narrowing is the primary issue, and other treatments are required.

B. Laser trabeculoplasty is not indicated in cases of angle-closure glaucoma (ACG) and secondary open-angle glaucoma (secondary OAG), as these conditions have distinct pathophysiology and require different treatments.

C. Laser trabeculoplasty is not indicated in cases of glaucoma medications failure, as it is a management strategy rather than a primary treatment option. In such cases, switching medications or increasing the dose or frequency of glaucoma medications is more appropriate.

D. Laser trabeculoplasty is not indicated in cases of severe ocular hypertension, especially when the IOP is already high and requires prompt intervention with medications or surgical procedures, such as trabeculectomy or Ahmed valve implantation.

**Clinical Pearl:** Laser trabeculoplasty is a valuable treatment option for primary open-angle glaucoma (POAG) patients with well-formed angles and inadequate response to medications, aiming to lower IOP and preserve visual function. Early intervention and proper patient selection are crucial for successful outcomes.