Related Experiment Video
Updated: Sep 8, 2025

10:10
Full-Circle Cauterization of Limbal Vascular Plexus for Surgically Induced Glaucoma in Rodents
Published on: February 15, 2022
1.5K
Late-onset malignant glaucoma associated with Soemmering's ring: A case report
Omar Nusair1, Allison Harmel1, Gulrukh Shaheen1
1Kittner Eye Center, University of North Carolina-Chapel Hill, United States.
The Journal of International Medical Research
|August 20, 2025
Summary
Late-onset malignant glaucoma can occur years after cataract surgery. A Soemmering's ring may precipitate this condition, effectively treated with iridozonulohyaloidectomy and vitrectomy.
Area of Science:
- Ophthalmology
- Glaucoma Research
Background:
- Malignant glaucoma (MG) typically follows angle-closure surgery.
- Late-onset MG can occur years after various ocular procedures, including cataract surgery.
Purpose of the Study:
- To report a case of late-onset malignant glaucoma after cataract surgery.
- To highlight the role of Soemmering's ring in precipitating MG.
- To emphasize the efficacy of iridozonulohyaloidectomy in treating pseudophakic MG.
Main Methods:
- Case report of an elderly African-American woman.
- Clinical examination, imaging, and surgical intervention.
- Management included aqueous humor suppressants, laser peripheral iridotomy, and iridozonulohyaloidectomy with vitrectomy.
Main Results:
- The patient developed malignant glaucoma 7 years post-cataract surgery.
- A Soemmering's ring was identified as a potential precipitant.
- Iridozonulohyaloidectomy with vitrectomy led to significant improvement in intraocular pressure and vision.
Conclusions:
- Soemmering's ring can precipitate late-onset malignant glaucoma.
- Iridozonulohyaloidectomy with vitrectomy is an effective treatment for pseudophakic malignant glaucoma.
Related Concept Videos
Glaucoma: Overview
740
Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
740
Angle Closure Glaucoma: Treatment
665
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...
665
Open Angle Glaucoma: Treatment
554
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...
Drugs such as carbonic anhydrase inhibitors, α2- and...
554
Photoreceptors and Visual Pathways
6.5K
At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
6.5K

