Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

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...

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...

Focusing of Light in the Eye

Focusing of Light in the Eye

Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...

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...

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...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

[Malignant Choroidal Melanoma in T4 Orbital Stage; Prosthesis of the Orbit].

Ceska a slovenska oftalmologie : casopis Ceske oftalmologicke spolecnosti a Slovenske oftalmologicke spolecnosti·2015

Same author

Peer evaluations.

Emergency·1989

Same author

EMS legislation's golden hour.

Emergency·1988

See all related articles

Search research articles

Related Experiment Video

Updated: Jun 14, 2026

Correction of Presbyopia by Monocular Bi-Aspheric Ablation Profile

Published on: September 20, 2024

IOL Tetraflex, KH 3500--presbyopia treatment.

J Ferko¹, A Ferkova

¹3F, Mikrochirurgia Oka, Kosice, Slovakia.

Oftalmologia (Bucharest, Romania : 1990)

|April 6, 2010

Summary

This summary is machine-generated.

This study shows the Tetraflex lens effectively treats presbyopia, with 92% patient satisfaction and an average accommodation of +1.5 diopters. YAG capsulotomy was used to manage posterior capsule opacification.

More Related Videos

Scleral Cross-linking Using Riboflavin and Ultraviolet-A Radiation for Prevention of Axial Myopia in a Rabbit Model

Scleral Cross-linking Using Riboflavin and Ultraviolet-A Radiation for Prevention of Axial Myopia in a Rabbit Model

Published on: April 3, 2016

Related Experiment Videos

Last Updated: Jun 14, 2026

Correction of Presbyopia by Monocular Bi-Aspheric Ablation Profile

Published on: September 20, 2024

Scleral Cross-linking Using Riboflavin and Ultraviolet-A Radiation for Prevention of Axial Myopia in a Rabbit Model

Scleral Cross-linking Using Riboflavin and Ultraviolet-A Radiation for Prevention of Axial Myopia in a Rabbit Model

Published on: April 3, 2016

Area of Science:

Ophthalmology
Biomedical Engineering

Background:

Presbyopia, an age-related loss of eye accommodation, necessitates treatment options beyond spectacles and contact lenses.
Current surgical interventions for presbyopia include conductive keratoplasty, excimer laser surgery, and clear lens extraction (CLE).

Purpose of the Study:

To evaluate the four-year clinical experience with the LOL Tetraflex KH 3500 intraocular lens for presbyopia correction.
To assess the efficacy and patient satisfaction with the Tetraflex lens in a real-world clinical setting.

Main Methods:

A cohort of 35 patients (71 eyes) underwent implantation with the Tetraflex lens between 2005 and 2009.
Patient outcomes were assessed using subjective satisfaction scales and objective measurements of accommodative amplitude and posterior capsule opacification (PCO).
YAG capsulotomy was performed for PCO, and its impact on pseudophakic accommodation was analyzed.

Main Results:

92% of patients reported complete satisfaction with the surgical outcomes.
Objective measurements revealed an average accommodative amplitude of +1.5 diopters in the operated eyes.
Posterior capsule opacification (PCO) occurred in 42.2% of cases, successfully managed with YAG capsulotomy.

Conclusions:

The Tetraflex intraocular lens is a viable treatment option for select patients suffering from presbyopia.
Careful patient selection and management of potential complications like PCO are crucial for optimal outcomes.