20/20

Contact Lenses

July 2021 Contact Lenses

Smart Contact Lenses Keep Getting Better

The Purdue Research Foundation Office of Technology Commercialization recently secured a patent for a new contact lens technology to help diagnose and monitor ocular health conditions, as reported in ScienceDaily. Like other ‘smart’ contact lenses, biosensors embedded on the soft contact lenses record electrophysiological activity from the corneal surface. But there’s a difference. Geared for retinal activity, the ultrathin biosensors are stretchable, making them more compatible with the curved shape of commercial soft contact lenses, increasing patient comfort.
July 2021 Contact Lenses

Unity BioSync with HydraMist: More Comfort for All-Day Wear

Contact lens wearers want the same thing everyone else wants: to see clearly, keep their eyes healthy, be comfortable all day long. Since they were first introduced as far back as 1887, contact lenses have continually improved in all three key areas. But even today, roughly one in six U.S. contact lens wearers eventually abandons contact lenses, and a lack of comfort (also known as “awareness” of the lens on the eye) is considered to be one of the main culprits. Unity BioSync® with HydraMist® is a new premium daily disposable silicone hydrogel contact lens that, through the HydraMist Technology, brings a new level of comfort to contact lens wearers.
May 2021 Contact Lenses

Accommodating Contact Lenses

Current estimates are that presbyopia affects approximately 1.8 billion people around the world, and as the world population ages (we’re living longer), that number will rise considerably. Contemporary presbyopia correction with contact lenses includes monovision and multifocal lenses. But what if a contact lens could transition from distance to near vision as seamlessly as our younger eyes? Based on the volume of new patent filings and prototypes, accommodating contact lenses are in our future.
May 2021 Contact Lenses

Soft Contact Lenses Turn 70

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.
January 2021 Contact Lenses

Slime: The Contact Lens Connection

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.
November 2020 Eyes/Optics

Optical Rock

I knew Andy Karp, Group Editor Lenses and Technology for Vision Monday and 20/20 Magazine, was a musician, but I didn’t know the extent of his talents.
November 2020 Eyes/Optics

Necessity is the Father of Invention

What happens when someone who needs medically necessary scleral contact lenses loses the dexterity to insert and remove them? Why, he invents a robot to do it for him!
November 2020 Eyes/Optics

The New Normal

I get calls all day at work asking what our “new normal” is. Patients inquire about the length of exams, how to proceed when they arrive, anything that might have changed since COVID hit. 
October 2020 Eyes/Optics

Contact Lens Buffet

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.
October 2020 Eyes/Optics

Navigating Through the Fog

Thank you to our Ms. Specs readers who wrote in response to her columns on anti-fog techniques and requested more information about anti-fog products!