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Related Concept Videos

Angle Closure Glaucoma: Treatment01:28

Angle Closure Glaucoma: Treatment

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...
Glaucoma: Overview01:25

Glaucoma: Overview

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...
Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

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, whereas...
Cardiac Catheterization I: Pre-Procedure Overview01:28

Cardiac Catheterization I: Pre-Procedure Overview

Cardiac catheterization is an invasive diagnostic technique used to identify and evaluate structural and functional diseases of the heart and major blood vessels. This technique diagnoses congenital heart disease, coronary artery disease, valvular heart disease, and coronary spasms and assesses ventricular function. It helps guide treatment decisions, including the need for revascularization procedures like percutaneous coronary intervention (PCI) or coronary artery bypass grafting (CABG) and...
Pharmacovigilance01:19

Pharmacovigilance

Post-marketing surveillance is a critical component of pharmaceutical regulation, often uncovering unanticipated adverse drug reactions (ADRs) once a drug is widely used over an extended period.
This process, termed pharmacovigilance, aims to detect, evaluate, and minimize harmful effects related to medication use. The data collection for pharmacovigilance depends on spontaneous reporting systems, where healthcare professionals or patients voluntarily report suspected ADRs.
In some cases, there...
Open Angle Glaucoma: Treatment01:27

Open Angle Glaucoma: Treatment

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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Related Experiment Video

Updated: May 23, 2026

Modeling Cataract Surgery in Mice
05:19

Modeling Cataract Surgery in Mice

Published on: December 1, 2023

Serious adverse events after cataract surgery.

Joshua D Stein1

  • 1Department of Ophthalmology and Visual Sciences, University of Michigan Medical School, Ann Arbor, Michigan 48105, USA. jdstein@med.umich.edu

Current Opinion in Ophthalmology
|March 28, 2012
PubMed
Summary

Cataract surgery is safer than ever, with fewer serious complications reported. Identifying high-risk patients and utilizing advanced techniques helps minimize risks for better patient outcomes.

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Area of Science:

  • Ophthalmology
  • Surgical Innovation
  • Patient Safety

Background:

  • Cataract surgery has seen significant advancements in equipment, instrumentation, and techniques over recent decades.
  • These technological and procedural improvements have directly influenced the safety profile of the procedure.

Purpose of the Study:

  • To review the impact of advancements in cataract surgery on its safety profile.
  • To analyze factors contributing to the declining risk of serious postoperative adverse events.

Main Methods:

  • Review of recent studies and literature on cataract surgery outcomes.
  • Analysis of patient-related and surgeon-related factors influencing complication rates.

Main Results:

  • A notable decline in serious postoperative adverse events such as endophthalmitis, suprachoroidal hemorrhage, and retinal detachment has been observed.
  • Patient factors (male sex, diabetic retinopathy, concurrent intraocular surgery, tamsulosin use) and surgeon factors (low volume, limited experience) are associated with increased complication risk.

Conclusions:

  • Cataract surgery remains a highly tolerated procedure with a low incidence of sight-threatening complications.
  • Identifying high-risk patients and implementing targeted strategies are crucial for mitigating surgical risks.
  • Ongoing innovations like multifocal intraocular lenses and femtosecond laser technology may further reduce complications.