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The first contact lenses were made of glass, in 1888. Initially the glass was blown but soon lenses were made by being ground to shape. For the first fifty years, glass was the only material used. The lenses were thin, yet reports of injury were rare. In 1938 perspex (polymethylmethacrylate, or PMMA) began to replace glass in contact lens ...
A 2016 Cochrane Review seeking to compare the effectiveness of various over the counter artificial tears in treating dry eye. While the review stated that it is unclear which artificial tear formulation works best, two trials found that 0.2% polyacrylic acid-based tears were more effective in treating dry eye symptoms over 1.4% polyvinyl ...
A slew of recent recalls and warnings has called into question the safety of products designed to treat and maintain eye health. On Friday, the Food and Drug Administration warned consumers not to ...
[table-of-contents] stripped. It’s been a bad year for eye drops. The U.S. Food and Drug Administration (FDA) has issued yet another eye drop recall—this time focusing on 27 different over-the ...
Alcon offices in Johns Creek, Georgia. Alcon Inc. (German: Alcon AG) is a Swiss-American pharmaceutical and medical device company specializing in eye care products. It has a paper headquarters in Geneva, Switzerland but its operational headquarters are in Fort Worth, Texas, United States, where it employs about 4,500 people. [2]
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