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Open Angle Glaucoma: Treatment

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...

Ophthalmic Drug Delivery Systems

Ophthalmic Drug Delivery Systems

Ophthalmic drug delivery faces major limitations due to poor absorption across the corneal membrane. This process is primarily driven by diffusion and is influenced by two main factors: the physicochemical properties of the drug and tear drainage. Most ophthalmic drugs, such as pilocarpine, epinephrine, atropine, and local anesthetics, are weak bases. They are typically formulated at an acidic pH to enhance chemical stability. However, this leads to high ionization, reducing their ability to...

Glaucoma: Overview

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...

Toroids

Toroids

A toroid is a closely wound donut-shaped coil constructed using a single conducting wire. In general, it is assumed that a toriod consists of multiple circular loops perpendicular to its axis.
When connected to a supply, the magnetic field generated in the toroid has field lines circular and concentric to its axis. Conventionally, the direction of this magnetic field is expressed using the right-hand rule. If the fingers of the right hand curl in the current direction, the thumb points in the...

Angle Closure Glaucoma: Treatment

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...

One-Compartment Open Model for IV Bolus Administration: General Considerations

One-Compartment Open Model for IV Bolus Administration: General Considerations

The one-compartment model is a pharmacokinetic tool that models the body as a single, uniform compartment, facilitating the understanding of drug distribution and elimination. This model is particularly beneficial for intravenous (IV) bolus administration, where the drug rapidly circulates throughout the body.
The drug's presence in the body is defined by an equation representing the difference between the rates of drug entry and exit. Key parameters—elimination rate constant, half-life,...

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Related Experiment Video

Updated: May 25, 2026

In vivo Structural Assessments of Ocular Disease in Rodent Models using Optical Coherence Tomography

In vivo Structural Assessments of Ocular Disease in Rodent Models using Optical Coherence Tomography

Published on: July 24, 2020

[Toric IOL's].

¹Espace Pitot, 60, place Mirouze, 34000 Montpellier, France. levy.34@me.com

Journal Francais D'Ophtalmologie

|January 20, 2012

Summary

This summary is machine-generated.

Toric intraocular lenses (IOLs) offer a reliable solution for astigmatism correction during cataract surgery. This review covers various toric IOL models and their indications for different astigmatism types.

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Related Experiment Videos

Last Updated: May 25, 2026

In vivo Structural Assessments of Ocular Disease in Rodent Models using Optical Coherence Tomography

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Published on: July 24, 2020

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Rotating the Intraocular Lens to Prevent Posterior Capsular Opacification in Cataract Surgeries

Rotating the Intraocular Lens to Prevent Posterior Capsular Opacification in Cataract Surgeries

Published on: July 7, 2023

Area of Science:

Ophthalmology
Biomedical Engineering

Context:

Cataract surgery is a common procedure.
Astigmatism significantly impacts visual acuity.
Toric intraocular lenses (IOLs) are advanced optical devices.

Purpose:

To review methods for astigmatism correction during cataract surgery.
To discuss available pseudophakic toric IOL models.
To outline indications for toric IOL implantation.

Summary:

Toric IOLs are premium lenses used to correct astigmatism in cataract patients.
Various toric IOL models, including monofocal and multifocal options, are available.
Indications encompass both regular and irregular astigmatism.

Impact:

Improved visual outcomes for patients with astigmatism.
Enhanced quality of life post-cataract surgery.
Provides surgeons with comprehensive information on toric IOLs.