Intraocular pressure changes and pain scores within 24 hours and short-term outcomes after micropulse transscleral

Nattanan Phanvichatkul1, Pukkapol Suvannachart1,2

  • 1Department of Ophthalmology, Suddhavej Hospital, Mahasarakham University, Mahasarakham, Thailand.

Plos One
|February 6, 2026
PubMed
Abstract

Insights

Micropulse transscleral laser therapy (MP-TLT) significantly reduces intraocular pressure (IOP) within 24 hours, with the best results seen at one week. This glaucoma treatment shows favorable short-term outcomes and a high success rate.

Area of Science:

  • Ophthalmology
  • Glaucoma Management
  • Laser Therapy

Background:

  • Glaucoma is a leading cause of irreversible blindness worldwide.
  • Elevated intraocular pressure (IOP) is a primary risk factor for glaucoma progression.
  • Effective IOP reduction strategies are crucial for preserving vision.

Purpose of the Study:

  • To evaluate the efficacy of micropulse transscleral laser therapy (MP-TLT) in reducing intraocular pressure (IOP).
  • To assess pain scores and short-term outcomes following MP-TLT.
  • To analyze IOP changes over a 24-hour period and up to one week post-procedure.

Main Methods:

  • A retrospective case series design was employed.
  • MP-TLT was performed on 46 eyes of 40 patients, excluding those with prior cyclophotocoagulation or combined procedures.
  • Intraocular pressure (IOP) and pain scores (NRS) were recorded serially up to 24 hours and at follow-up visits. Success was defined as ≥30% IOP reduction or IOP between 6-18 mmHg.

Main Results:

  • Mean preoperative IOP was 40.6 mmHg, with a mean postoperative IOP of 24.5 mmHg (39.7% reduction) by the following day.
  • Significant IOP reduction was observed at all measured time points (p < 0.05).
  • The mean IOP reached 16.4 mmHg at week 1, with an 80.6% success rate at 12 months. Pain scores remained low throughout.

Conclusions:

  • Micropulse transscleral laser therapy (MP-TLT) effectively reduces intraocular pressure (IOP) within 24 hours.
  • The maximal IOP-lowering effect of MP-TLT is observed by one week post-procedure.
  • MP-TLT demonstrates favorable short-term outcomes and a high success rate in glaucoma management.

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