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Related Concept Videos

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: Jan 7, 2026

Reduction of Iatrogenic Atrial Septal Defects with an Anterior and Inferior Transseptal Puncture Site when Operating the Cryoballoon Ablation Catheter
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Modified Superior Angle Access Using a Direct Goniolens for Ab Interno Needling Bleb Revisions.

Priyanga M1, Muralidhar Rajamani1, Davinder S Grover2

  • 1Department of Glaucoma, The Eye Foundation, Coimbatore, TN, India.

Journal of Glaucoma
|December 31, 2025
PubMed
Summary
This summary is machine-generated.

A novel globe rotation technique improves visualization for ab interno bleb revision surgery. This method successfully reduced intraocular pressure and medication dependence in glaucoma patients.

Keywords:
ab interno needlingdirect gonioscopyglobe rotation

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Area of Science:

  • Ophthalmology
  • Glaucoma Surgery

Background:

  • Ab interno bleb revision is crucial for managing failed glaucoma filtration surgery.
  • Direct visualization of the superior angle during these procedures can be challenging.

Purpose of the Study:

  • To describe a novel globe rotation technique for direct gonioscopic visualization during ab interno bleb revision.
  • To evaluate the outcomes of this technique.

Main Methods:

  • Retrospective review of 13 eyes undergoing ab interno bleb revision using the Grover-Fellman biplanar sclerostomy spatula.
  • Globe rotation achieved with limbal traction sutures, direct goniolens, and optimized patient/microscope positioning.

Main Results:

  • Successful access to the trabeculectomy ostium in all cases.
  • Mean intraocular pressure decreased from 25.7±13 mm Hg to 10.5±4.2 mm Hg at 6 months (P=0.005).
  • Median medication use reduced from 4 to 0 (P=0.005), with no bleb leaks or conjunctival perforations.

Conclusions:

  • Globe rotation offers a simple, effective method for direct superior angle visualization in ab interno bleb revision.
  • This technique may enhance the adoption of ab interno glaucoma surgical approaches.