Selective laser trabeculectomy has long-term efficacy over eye drops for glaucoma
UK: Selective laser trabeculoplasty (SLT) can produce greater results than routinely employed IOP-lowering eye drops, according to new findings from an extension of the LiGHT study that was published in the Ophthalmology journal.
Glaucoma is a chronic illness that requires lifelong therapy; the average life expectancy at the time of the initial diagnosis is 9–13 years, and the average life expectancy following trabeculectomy is 7.5 years. The United States Food and Drug Administration approved selective laser trabeculoplasty (SLT) for the treatment of glaucoma in 2001. Since then, SLT has become a more popular option to eye drops that lower IOP, but there hasn't been much research on how effective it is as a stand-alone therapy.
This study compares the clinical efficacy of the initial SLT treatment to IOP-lowering eye drops after 6 years of treatment in terms of health-related quality of life (HRQL) and clinical outcomes.
The initial SLT or eye drops were randomly assigned to patients in this prospective multicenter randomized controlled experiment. International standards served as the foundation for the goal IOP and monitoring intervals for each eye. Those in the SLT arm were offered a third SLT after the first three years of the experiment, if necessary; patients in the drops arm were allowed SLT as a switch or escalation in treatment. Analysis was done with treatment in view. Clinical efficacy and safety were the secondary goals; HRQL at 6 years was the primary outcome. In the LiGHT experiment, 633 patients (91.5%) of the 692 patients who completed the first three years joined the extension phase, while 524 patients (82.8% of those who entered the extension phase and 73% of those who were initially randomized) finished the trial after six years.
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