In 1951, Czech chemist Otto Wichterle developed the first soft contact lens polymer made from hydrophilic hydroxyethyl methacrylate (HEMA). The water-loving lens allowed more oxygen to pass through to the cornea. The early lenses were made by filling small molds with the polymer, then allowed to harden. The resulting “buttons” were then cut to the desired prescription. The edges had to be smoothed by hand. Clearly, a more efficient way to make the lenses was needed.
You read that right. There’s a connection between contact lenses and that sticky, stretchy creation that’s all the rage with kids. It seems that contact lens solution is a key ingredient for homemade slime. Who figured that one out? I couldn’t find the responsible party, but a little of the history and chemistry behind slime will give some insight as to why it works.
On October 1, the American Optometric Association (AOA) posted a notice about a recall of AquaSoft contact lenses by 1-800 CONTACTS. AquaSoft is the company’s private label brand, manufactured by Visco Technology in Malaysia.
In Lewis Carroll’s Alice in Wonderland, the Mock Turtle sings longingly of “Beautiful Soup.” There’s another ‘beautiful soup’ you should know about. It’s the chemical solution used to make ophthalmic lense
The content contained on this website is for informational purposes only. The content is not intended to be a substitute for professional advice. Reliance on any information provided in this article is solely at your own risk.