[Surgical peripheral iridectomy and argon laser iridotomy in primary closed-angle glaucoma. Comparative statistical...

Area of Science:

• Ophthalmology
• Glaucoma Management
• Surgical Interventions

Background:

• Primary closed-angle glaucoma (PCG) poses a risk of vision loss.
• Peripheral iridotomy is a key intervention for PCG.
• Surgical peripheral iridectomy and Argon laser iridotomy are established techniques.

Purpose of the Study:

• To compare the mid-term efficacy of surgical peripheral iridectomy versus Argon laser iridotomy in PCG.
• To evaluate outcomes in various PCG subtypes, including reopened angles, positive provocative tests, fellow eyes, and mixed glaucoma.

Main Methods:

• A randomized study involving 60 eyes divided into two groups: surgical peripheral iridectomy (Group A) and Argon laser iridotomy (Group B).
• Patients were followed for two years with assessments at one week, three months, six months, one year, and two years.
• Key parameters measured included intraocular pressure (target ≤ 22 mmHg), far visual acuity, crystalline lens opacity, and post-operative complications.

Main Results:

• Both surgical peripheral iridectomy and Argon laser iridotomy yielded similar tonometric results (intraocular pressure control).
• No significant difference in visual acuity was observed between the two groups after two years.
• Outcomes were comparable regardless of whether the treatment was prophylactic or curative, and across different age groups.

Conclusions:

• Surgical peripheral iridectomy and Argon laser iridotomy demonstrate equivalent mid-term efficacy in managing primary closed-angle glaucoma.
• The choice of technique does not significantly impact long-term intraocular pressure control or visual acuity.
• Both methods are effective for a range of PCG presentations, including prophylactic and therapeutic scenarios.