Related Experiment Video
Updated: May 1, 2026
10:10
Full-Circle Cauterization of Limbal Vascular Plexus for Surgically Induced Glaucoma in Rodents
Published on: February 15, 2022
1.7K
Optic disc hemorrhage after phacoemulsification in patients with glaucoma
Karine D Bojikian1, Daniel B Moore1, Philip P Chen1
1Department of Ophthalmology, University of Washington, Box 359608, 325 Ninth Avenue, Seattle, WA 98104-2499, USA.
ISRN Ophthalmology
|April 15, 2014
Summary
Phacoemulsification cataract surgery did not increase optic disc hemorrhage (ODH) in glaucoma patients. Aspirin use, however, was linked to ODH, suggesting careful consideration in glaucoma patients undergoing surgery.
Area of Science:
- Ophthalmology
- Glaucoma Research
- Cataract Surgery Outcomes
Background:
- Optic disc hemorrhage (ODH) is a recognized risk factor for glaucoma progression.
- Phacoemulsification cataract surgery can cause significant intraocular pressure fluctuations.
- The potential link between cataract surgery and ODH in glaucoma patients requires investigation.
Purpose of the Study:
- To determine if phacoemulsification is associated with optic disc hemorrhage in patients with glaucoma.
- To compare the incidence of ODH before and after cataract surgery.
Main Methods:
- Retrospective review of glaucoma patients undergoing phacoemulsification.
- Analysis of patient data with at least 3 pre-operative and 5 post-operative clinic visits.
- Evaluation of optic disc hemorrhage using slit lamp biomicroscopy.
Main Results:
- A total of 158 eyes were evaluated; 9.5% showed optic disc hemorrhage during the study period.
- The cross-sectional prevalence of ODH immediately post-surgery was 2.5%.
- No significant difference in ODH episodes was found between the year before and the year after surgery (P = 0.68); aspirin use was associated with ODH (P = 0.015).
Conclusions:
- Phacoemulsification cataract surgery does not appear to increase the incidence of optic disc hemorrhage in glaucoma patients.
- The observed prevalence of ODH post-surgery is consistent with existing literature.
- Aspirin use is a potential factor associated with ODH in this patient population.
Related Concept Videos
01:25Glaucoma: Overview
1.7K
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...
1.7K
01:28Angle Closure Glaucoma: Treatment
1.6K
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...
1.6K
01:27Open Angle Glaucoma: Treatment
1.1K
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...
1.1K
01:22Photoreceptors and Visual Pathways
8.5K
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,...
8.5K
01:27Diabetic Retinopathy
55
DefinitionDiabetic retinopathy is a microvascular complication of diabetes affecting the retinal blood vessels.Risk FactorsDiabetic retinopathy is present in almost all individuals with type 1 diabetes and more than 60% of those with type 2 diabetes after two decades of disease.The risk increases with poor glycemic control, hypertension, dyslipidemia, smoking, pregnancy, and puberty.Although cataracts and glaucoma are also more frequent in people with diabetes, retinopathy remains the leading...
55