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The standard approach to contact lens correction of irregular astigmatism today and for the foreseeable future is to prescribe a non-flexing rigid gas permeable (GP) lens design, whether that be [...]

Bandage contact lenses (BCLs) are relatively low cost and can be used for a variety of therapeutic purposes. They heal injured corneal tissue and relieve pain and discomfort by protectively [...]

2023 JUL 1 (NewsRx) -- By a News Reporter-Staff News Editor at Obesity, Fitness & Wellness Week -- Research findings on drug delivery systems are discussed in a new report. [...]

In 1990, the financial cost of myopia in the United States was estimated at $4.8 billion. (1) And, in addition to this societal burden, myopia carries an increased risk of [...]

The decision whether a contact lens is to be used on a daily or extended wear basis is made by the contact lens provider (such as a physician) as opposed to the manufacturer of the lens. There is currently confusion regarding the physical characteristics of disposable contact lenses. Disposable contact lenses are hydrogel plastics molded into designs similar to, but less expensive than, those previously used for extended wear contact lenses. A study was undertaken to determine if the oxygen permeability of these disposable lenses was changed by the new, less expensive production method. Oxygen permeability, the intrinsic ability of a material to transmit oxygen by diffusion, is an important feature of modern contact lens material. A change in oxygen permeability could put stress on the cornea (transparent covering of the eyeball) due to decreased exposure to oxygen. Three brands of disposable contact lenses were evaluated using a method which has been the industry standard for many years (single-chamber polarographic oxygen permeability). The three brands evaluated were Acuvue, NewVues, and SeeQuence. The results showed that the inexpensive production method, permitting the low per unit cost of the lenses, does not change the physical properties of oxygen permeability or transmissibility (ability of a lens of a specific thickness to transmit oxygen by diffusion). It is concluded that the stress to the cornea is similar when either disposable lenses or conventional reusable lenses are worn. (Consumer Summary produced by Reliance Medical Information, Inc.)

Silicone Hydrogels and the Rosacea Patient KS, a 33-year-old female, presented to the University of Iowa with complaints of severe burning and discomfort for the last eight months. Over the [...]

* I visited Optrafair, again. My interest is specific; narrow and deep: I want to keep in touch with all developments in the field of contact lenses and related technologies. [...]

optician takes a look behind the latest Daily Mail story accusing optics of ripping off patients Those who dismiss last week's Daily Mail report which accused the contact lens industry [...]

In Part 1 of this series, Elizabeth Hill and Dr Philip Morgan examined the incidence of astigmatism, the options available for its correction and the current trends in contact lens [...]

Reviewed by Simonetta Morselli, MD San Diego -- The I-CARE anterior chamber foldable phakic IOL (CORNEAL, Paris, France) seems to provide excellent anatomic and visual results 2 years after implantation. [...]

Silicone hydrogel contact lenses supply unprecented levels of oxygen to the cornea and have the capability to be worn continuously. But Cristina Schnider and John Meyler argue that deficiencies in [...]

Jayne Schofield describes some of the skills which may help practitioners to maximise their success rate when fitting multifocal soft lenses and explains the need for effective patient management and [...]

Anna Sulley presents the second five answers to 10 frequently-asked questions on fitting soft toric lenses. The first part appeared in the June 6 issue of optician Following on from [...]

Anna Sulley presents the first five of 10 answers to some common questions on fitting soft toric contact lenses Historically, fitting soft toric contact lenses was fraught with uncertainties and [...]

Managing adverse events with continuous wear contact lenses and the optometric use of ocular therapeutics were the dominant themes at the Scottish Contact Lens Society's conference in Edinburgh last month, [...]

Q How can I determine which of my patients are appropriate candidates for extended-wear contact lenses? A First, determine why the patient wants extended wear. "The patient first of all [...]

Paul DiFiore, O.D. independently operates three practices in New Jersey under the name "Optique Boutique. " He caters to an upscale clientele providing high-quality, name-brand frames and specialty contact lenses. [...]

Dr. Bergenske, a noted author and frequent lecturer, is in private practice specializing in contact lenses in Madison, Wis. Let's face it -- fitting astigmats with spherical lenses is the [...]

Dr. Conekin is a solo, private practitioner in Jacksonville, N. C. He specializes in difficult-to-fit contact lens patients and serves an area with a population of approximately 45,000. "With the [...]

"Many of my patients don't necessarily want the one-day disposable-They want to sleep in their lenses," says Daniel Brazean, OD, of Quebec, Canada. Regardless of nationality, contact lens patients share [...]

PRAGUE, CZECH REPUBLIC--It was here in 1956 that Professor Otto Wichterle, a polymer chemist from Prague, first tested a contact lens made from a new bio-compatible bydrogel material. It was [...]

You've probably had to deal with a few hard-headed patients who've insisted they can wear their contact lenses for as long as, well, forever. They're probably the same ones who [...]

Contact lenses have been popular ever since their introduction. Although glasses have a longer track record by a few hundred years, many people find them uncomfortable and lacking in peripheral [...]

FRANKFURT, GERMANY MICROSCOPIC ANALYSIS of anterior capsule specimens created during capsulotomy with a proprietary femtosecond laser system (LenSx, Alcon Laboratories) show a better profile of morphological changes using the current [...]