Archive for June, 2009
Researchers Walline, Jeffrey J et al have shown in a recent study published in the journal Optometry and Vision Science that a child’s self-perception can be improved by wearing contact lenses. The study focused on 484 shortsighted (myopia) children ages 8 to 11. Approximately half the children (237) were randomly selected to wear eye glasses and the other half (247) were required to wear contact lenses. The children were then followed for three years and monitored for changes in areas that may affect a child’s self-perception such as social acceptance, academic and athletic competence, ...
In the following report by, voanews, a collage student, Tommy Hardeman, gives us an account of his choice to have contact lenses surgically implanted. Many people are not able to have LASIK eye surgery, contact lens implants may be the alternative they have been looking for. Unlike LASIK surgery where the shape of the cornea is permanently changed contact lens implants does not affect the shape of the cornea and has the added bonus of being able to be corrected for in the future in case your eye prescription changes. The procedure involves minor surgery in which the patient is awake taking ...
Professor Otto Wichterle, had the greatest influence on contact lenses since the second world war. Wichterle tried to make contact lenses in a mold using HEMA (hydroxyethylmethacrylate), developed the spin casting process, the first effective production method for soft contact lenses. He was born in Prostejov, Northern Moravia, and after a sickly childhood wanted to study mechanical engineering at university. A friend, however, suggested chemistry and about this time he developed an interest in politics. In 1936 he received his first doctorate and subsequently produced his first synthetic ...
A recent survey by researchers at the the Centre for Contact Lens Research at the University of Waterloo has shown that nearly 40 percent of people who wear contact lenses keep them in past the manufacturer’s recommended date. More than 189 eye care specialists participated in the study which resulted in 1,654 (60% of the patients were female with an average age of 34) surveys meeting inclusion criteria. 265 of the 1,654 participants wore daily disposable contact lenses, 744 two-week replacement contact lenses 645 used one-month replacement contact lenses. The contact lens manufacturer ...
In a survey done by the Asthma & Allergy Foundation of America (AAFA) of all the woman who suffer through allergies many complain of puffy and red eyes. The survey says that 40 percent of these women also feel that their allergy symptoms (red, dry and watery eyes) makes them look both tired and unattractive. To make matters worse around half of these women have to resort to wearing eye glasses instead of contact lenses because if the allergy symptoms. This adds to the feeling of being unattractive because they are not comfortable in the eye glasses which ultimately affects their every ...
Contact lenses can be manufactured in a variety of ways. The following video shows the various steps from lathe, to polish, to sterilization in making a contact lens. Although this video is quite old it still gives you a good idea about the different steps involved in making contact lenses. Today contact lenses are made with out any handling, shaping or sterilizing by any human they are manufactured fully automated. The process has become so cost effective that contact lens manufacturers like Johnson & Johnson and Ciba Vision are able to produce affordable disposable contact ...



















