May 2008
Volume 49, Issue 13
Free
ARVO Annual Meeting Abstract  |   May 2008
Effects of SLT on IOP in POAG on Maximum Medical Therapy
Author Affiliations & Notes
  • M. Malen
    Ophthalmology, New York Medical College at Westchester, New York, New York
  • P. Lai
    Ophthalmology, New York Medical College at Metropolitan Hospital, New York, New York
  • Footnotes
    Commercial Relationships  M. Malen, None; P. Lai, None.
  • Footnotes
    Support  None.
Investigative Ophthalmology & Visual Science May 2008, Vol.49, 1235. doi:https://doi.org/
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      M. Malen, P. Lai; Effects of SLT on IOP in POAG on Maximum Medical Therapy. Invest. Ophthalmol. Vis. Sci. 2008;49(13):1235. doi: https://doi.org/.

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

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Abstract

Purpose: : To evaluate the effects of selective laser trabeculoplasty (SLT) on intraocular pressure in the treatment of primary open-angle glaucoma (POAG) on maximum medical therapy. In this retrospective chart review, all of the SLT procedures were performed by residents.

Methods: : 29 eyes with POAG on maximum medical therapy were treated with a frequency-doubled, Q-switched Nd:YAG laser (532 nm). A total of 100 spots were placed over 360° of the TM at energy level 0.8 mJ/pulse. No changes were made to the medication pre and post SLT. IOP was obtained via Goldman applanation preoperatively, 2 weeks, 3 months, 6 months, 9 months and 12 months after treatment.

Results: : The mean pretreatment IOP was 18.97 mm Hg (SD 5.49). After 2 weeks of follow-up the IOP was reduced by a mean of 1.86 mm Hg (SD 0.78, p=0.04); after 3 months, IOP was reduced by a mean of 0.97 mm Hg (SD 2.12, p=0.47); after 6 months of follow-up, IOP was reduced by a mean of 0.86 mm Hg (SD 0.78, p=0.50); after 9 months of follow-up, IOP was reduced by a mean of 1.41 mm Hg (SD 1.02, p=0.24); after 12 months of follow-up, IOP was reduced by a mean of 2.48 mm Hg (SD 0.37, p=0.03). 2 weeks and 1 year after treatment were significantly lower than pre-treatment values in both groups (t-test, p < 0.05).

Conclusions: : SLT in a resident setting showed statistically significant lower IOP 1 year after treatment with no addition of medication for POAG on maximum medical therapy.

Keywords: laser • optic nerve • trabecular meshwork 
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