Transition Lenses
Transition Optical was the first company to successfully commercialise a plastic photochromic lens (a type of transition lens) in 1990 and is now a world leader in photochromic lenses.
What is a photochromic lens?
Photochromic lenses change colour in response to a chemical reaction triggered by UV rays. If you are wearing photochromic lenses, they will darken when they come into contact with sunlight and fade back into their original colour when you move out of the sun.
What are photochromic lenses made of?
Photochromic lenses can be made from two types of material: glass or plastic. Although glass lenses are scratch resistant, they are heavier and breakable. Plastic lenses, on the other hand, are impact resistant, light-weight, and better at filtering UV rays so they are much more popular.
What different types of transition lenses are available?
Transition VI: perfect for everyday wear, Transition VI are clear indoors and quickly change from dark to light and light to dark
Transition XTRActive Lenses: Transition XTRActive have a slight tint indoors, and provide extra darkness at all temperatures
Transition SOLFX: Transition SOLFX are polarised sunwear specifically designed for outdoor activities; they adjust from dark to darker, depending on light (mivision iss. 52).
Research on Glaucoma Gene
A recent study, involving eye-tests of over 2,000 Australians, has helped to identify people at high risk of developing glaucoma. Thanks to the research conducted by deCODE genetics Inc, Iceland and Dr. Jamie Craig from Flinders University, South Australia, scientists have been able to identify genes contributing to risk for glaucoma. The findings represent an important step toward a better understanding of glaucoma and will likely lead to better diagnostic and predictive tests, as well as new treatments (mivision iss. 52).
Alcohol and Cataracts
A Sydney study has found that moderate consumption of alcohol may be associated with a reduced need for cataract surgery. The long-term study found that subjects who drank two or more alcoholic drinks a day, as well as those who did not drink at all, showed a higher incidence of cataract surgery than those who drank one or two alcoholic drinks a day (mivision iss. 52).
Cataract Surgery Rebate
The Australian senate passed a motion in November 2009 to disallow Medicare rebates for cataract surgery items. No longer can patients receive rebates for having cataract surgery.
No comments:
Post a Comment