Muhammad Amin Shaikh, Syed Imtiaz Ali Shah, Manzoor Ali Kandhro, Khalid Rasul Shaikh, Amanullah Shaikh.
To Evaluate the Elevations of Intraocular Pressure after Nd: Yag Laser Posterior Capsulotomy.
Ophthalmol Update Jan ;13(1):38-41.

Objective: To evaluate the elevations of intraocular pressure after Nd:YAG laser posterior capsulotomy in 500 cases. Study Design: Prospective observational study: Place and Duration: Department of Ophthalmology Chandka Medical College & Civil Hospital Larkana from March 2010 to Sep 2010. Patients and Methods: The study comprises 500 patients performed at department of Ophthalmology, Chandka Medical College Hospital Larkana from March 2010 to Sep 2010. The patients who had undergone extracapsular cataract extraction with posterior chamber intraocular lens implantation and had developed posterior capsular opacification were selected from the out patient department. Results: We studied change of intraocular pressure after Nd: YAG laser posterior capsulotomy in 500 eyes of 500 patients. 260 (52%) were males and 240 (48%) females; all were pseudophakic having different age groups ranging from 10 to 80 years. Goldman applanation tonometer was used for IOP measurement before and after Nd: YAG laser application. Q-Switched Nd: YAG laser was used to perform posterior capsulotomy. Three hours after Nd: YAG laser posterior capsulotomy. IOP remained unchanged in 181 (36.2%) eyes, and in 274 (54.8%) eyes IOP raised upto 10mmHg. Out of these 243 (48.6%) eyes developed a rise of IOP upto 6mmHg and only 31 (6.2%) eyes had a rise more than 6mmHg but not over 10mmHg. 45(9%) eyes showed a rise of IOP more than 10mmHg. The mean pressure raised after 3 hours was 5.60mmHg and the mean IOP was 14.65mmHg. Antiglaucoma treatment was started in 50 (10%) eyes. Tab. Acetazolamide 250mg 2-Tablets state along with topical beta-blockers two times a day. Topical NSAID was given to all patients for decreasing intraocular inflammation. On following day i.e. 24 hours after laser treatment only 5 (1%) of eyes had significant elevation of IOP of more than 10mmHg, 204 (40.8%) of eyes had insignificant rise of IOP and 291 (58.2%) of eyes had normal base line IOP. Conclusion: This study confirms that IOP elevation is a frequent complication of Nd: YAG laser posterior capsulotomy. The pressure peak occurs within 3 hours post treatment. There was no correlation between the laser energy or the size of capsulotomy and the rise of IOP.

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