April 2009
Volume 50, Issue 13
Free
ARVO Annual Meeting Abstract  |   April 2009
The Effect of Laser Peripheral Iridotomy in Vietnamese Patients With Primary Angle-Closure
Author Affiliations & Notes
  • P.-H. Peng
    Ophthalmology, University of California, San Francisco School of Medicine, San Francisco, California
    Ophthalmology, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
  • N. Nguyen
    Ophthalmology, University of California, San Francisco School of Medicine, San Francisco, California
    Ngoc Nguyen Eye Clinic, San Jose, California
  • H. Nguyen
    Ngoc Nguyen Eye Clinic, San Jose, California
  • S. Lin
    Ophthalmology, University of California, San Francisco School of Medicine, San Francisco, California
  • Footnotes
    Commercial Relationships  P.-H. Peng, None; N. Nguyen, None; H. Nguyen, None; S. Lin, None.
  • Footnotes
    Support  None.
Investigative Ophthalmology & Visual Science April 2009, Vol.50, 162. doi:
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      P.-H. Peng, N. Nguyen, H. Nguyen, S. Lin; The Effect of Laser Peripheral Iridotomy in Vietnamese Patients With Primary Angle-Closure. Invest. Ophthalmol. Vis. Sci. 2009;50(13):162.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose: : To investigate the effect of laser peripheral iridotomy (LPI) on controlling intraocular pressure (IOP) and progression of angle closure in Vietnamese.

Methods: : Medical records of Vietnamese patients who were examined during the period from January 2004 to November 2008, and diagnosed as primary angle-closure suspect (PACS), primary angle-closure (PAC), or primary angle closure glaucoma (PACG) and who had received LPI, were reviewed. Clinical outcomes and ocular features were analyzed.

Results: : Two hundred patients (372 eyes) with a mean follow-up period of 8.0 ± 4.3 years were included in this study. The proportions of eyes which required additional treatments (medical, laser, or surgical) to control IOP were 15/197 (7.6%), 67/126 (53.2%), and 45/49 (91.8%) eyes in the PACS, PAC, and PACG groups, respectively. No eyes in the PACS group needed further laser or surgery. However, 8/126 (6.3%) and 17/49 (34.7%) of eyes in the PAC and PACG groups, respectively, had undergone filtration surgery. Four PACS (1.1%) eyes progressed to PAC; four PACS (1.1%) eyes progressed to PACG; and eight PAC (2.2%) eyes progressed to PACG. No significant difference in anterior chamber depth, lens thickness, axial length, lens/axial length factor, and relative lens position was found between eyes with and without progression.

Conclusions: : Further medications, laser, or surgery are required to control IOP after LPI for eyes with primary angle-closure, especially for eyes with PACG. Close follow up and appropriate therapies for these patients is warranted to prevent progression of disease.

Keywords: clinical (human) or epidemiologic studies: treatment/prevention assessment/controlled clinical trials • intraocular pressure • laser 
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