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Related Concept Videos

Open Angle Glaucoma: Treatment01:27

Open Angle Glaucoma: Treatment

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In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
Drugs such as carbonic anhydrase inhibitors, α2- and...
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Angle Closure Glaucoma: Treatment01:28

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Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...
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Related Experiment Video

Updated: Sep 14, 2025

Author Spotlight: A Novel Protocol for Intracameral Injections to Enhance Precision in Rodent Ophthalmology
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Association Between Prior Selective Laser Trabeculoplasty and Phaco-iStent Inject Efficacy.

Jeremy C K Tan1,2, Colin I Clement1, Andrew White3

  • 1Save Sight Institute, Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia.

Clinical & Experimental Ophthalmology
|July 23, 2025
PubMed
Summary
This summary is machine-generated.

Prior selective laser trabeculoplasty (SLT) may increase failure risk for iStent inject surgery. However, higher baseline intraocular pressure (IOP) in patients with prior SLT was linked to a reduced risk of surgical failure.

Keywords:
SLTiStent injectminimally‐invasive glaucoma surgery

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Area of Science:

  • Ophthalmology
  • Glaucoma Surgery
  • Minimally Invasive Glaucoma Surgery

Background:

  • Selective laser trabeculoplasty (SLT) is a common glaucoma treatment.
  • Phacoemulsification combined with iStent inject (phaco-iStent) is a minimally invasive glaucoma surgery.
  • The impact of prior SLT on phaco-iStent outcomes is not fully understood.

Purpose of the Study:

  • To evaluate the association between prior SLT and the IOP-lowering efficacy of phaco-iStent surgery.
  • To determine if previous SLT treatment affects the success rate of phaco-iStent implantation.

Main Methods:

  • Retrospective study of 1550 eyes undergoing phaco-iStent.
  • Patients were categorized into groups with and without prior SLT.
  • Propensity score matching was used to control for confounding factors like age, baseline IOP, medication use, and visual field mean deviation.

Main Results:

  • Prior SLT was associated with an increased risk of surgical failure across multiple success endpoints.
  • Hazard ratios for failure were 2.13 (endpoint A), 1.73 (endpoint B), and 1.51 (endpoint C).
  • In eyes with prior SLT, higher baseline IOP correlated with a significantly lower risk of failure to achieve a 20% IOP reduction.

Conclusions:

  • Prior SLT treatment is associated with a higher risk of failure after phaco-iStent surgery.
  • Higher baseline intraocular pressure in patients with prior SLT may predict better surgical outcomes.
  • Further research is needed to optimize surgical strategies for patients with prior SLT.