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Phacoemulsification is a cataract surgery method in which the internal lens of the eye which has developed a cataract is emulsified with the tip of an ultrasonic handpiece and aspirated from the eye. Aspirated fluids are replaced with irrigation of balanced salt solution to maintain the volume of the anterior chamber during the procedure.
Zenni Optical mail order. Zenni Optical was founded in 2003 by Tibor Laczay and Julia Zhen. [1] [2] Before being renamed to Zenni Optical when it began offering $7 and $8 glasses, the company was named 19dollareyeglasses.com. [3] [4] [5] Around 2014, co-founder Zhen acquired the building occupied by the Marin Independent Journal to house Zenni. [6]
It was founded in 2009 by Daniel Rothman, Eldad Rothman and Roy Yamner. Daniel Rothman is the current CEO of the company. [4] The company primarily focuses on North America, but also accepts orders from 92 countries. [5]
To avoid damage to your eyes, you can only view an eclipse safely through specially designed solar viewing glasses — i.e. "eclipse glasses" — or using a safe handheld solar viewer at all times.
The eye's retina lacks pain receptors, and thus damage could occur without one's awareness. [ 5 ] [ 6 ] The AAS said determining whether an eclipse viewer was safe required a spectrophotometer and lab equipment, but often the user should see nothing through the filter except for the Sun, sunlight reflecting off shiny metal, or intense light ...
The numbers on your eyewear are more important than you think—an optometrist tells us why. The post This Is What Those Numbers on Your Glasses Mean appeared first on Reader's Digest.