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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)
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.
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.
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).
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.
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