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ORIGINAL ARTICLE
Year : 2018  |  Volume : 7  |  Issue : 1  |  Page : 156

Micropulse Trabeculoplasty in Open Angle Glaucoma


1 Universidad Peruana Cayetano Heredia; Research Department of Vista Clinic, Lima, Peru
2 Universidad Peruana Cayetano Heredia; Research Department of Vista Clinic; Glaucoma Departament of Instituto Nacional de Oftalmología, Lima, Peru
3 Universidad Peruana Cayetano Heredia; Research Department of Vista Clinic, Lima; Ophthalmology Department of Huancavelica General Hospital, Huancavelica, Peru
4 Research Department of Vista Clinic; Universidad Nacional Mayor de San Marcos, Lima, Peru
5 Research Department of Vista Clinic; Glaucoma Departament of Instituto Nacional de Oftalmología; Universidad Nacional Mayor de San Marcos, Lima, Peru

Correspondence Address:
Dr. Diego Alejandro Valera-Cornejo
Universidad Peruana Cayetano Heredia, Research Department of Vista Clinic, Jirón Caracas 2410, Jesús María, Lima
Peru
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/abr.abr_203_17

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Background: We report the effect of micropulse laser trabeculoplasty (MLT) in the intraocular pressure (IOP) of patients with uncontrolled open-angle glaucoma (OAG). Materials and Methods: In this retrospective review, 30 eyes with OAG were treated with a single session of MLT at the Vista Clinic in Lima Perú. We used a 532 nm frequency doubled Nd: YAG laser to 360° of the trabecular meshwork with a power of 1000 mW, 15% of the duty cycle, and 300 ms of exposure. The IOP was measured at baseline and at 1 day, 1 week, 3 months, and 6 months post-treatment and were followed up for one last control. Results: The mean baseline IOP was 15.6 mmHg and in the last control was 12.8 mmHg, mean follow-up time of 19 months (±10 standard deviation [SD]). The mean reduction of IOP in the 1st day was 1.6 mmHg (±2.6 SD) and 1.2 mmHg (±3.3 SD) in the last follow-up. The mean percentage of IOP reduction was 17.9% and 7 eyes (40%) had IOP reduction >20%. No statistical significant difference in relation to demographic characteristics of the patients. The greatest reduction was achieved in the 1st day with a median of 2.00 (P < 0.001). A tendency to achieve a higher reduction of IOP in patients with higher baseline IOP was found but was not statistically significant. No adverse reactions occurred. Conclusions: MLT slightly reduced the IOP in a few patients with uncontrolled OAG for a very short time and may not be suitable for these patients.


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