Sunday, August 3, 2014


It's that time again, when I step away from the lensometer, pull my lab coat on, arrange the PD stick and pens in my pocket, and basically don the cloak of an optician. Because this is another blog post brought to you by Rachel, the author who's also an optician. :) 

I recently had a visit from Dave, my office's lab representative. (We mainly use a lab called Hoya, but there's others out there). Every so often he swings by our optometry practice and chats with us about the new technology offered in lenses. After the meeting I pulled him aside to explain my vision needs and the fact that I'm an author who stares at the computer screen for hours on end. He suggested I order an aspheric, digital lens with recharge coating. And while I do plan to tell you writers all about aspheric and digital lenses, today I want to talk to you about recharge coating.

And here's why:

It blocks a portion of the blue light from electronic devices. 

Odds are, if you've bought prescription glasses, you've been offered a clear coating on your lenses called anti-glare, or anti-reflective coating. The coating is clear, but can leave a faint greenish sheen if it's tilted in a particular way. It cuts the glare of oncoming headlights at night so you don't have the star-burst effect across your lenses. It also helps with glare from overhead lighting. I mainly love anti-reflective coating because it makes my lenses practically clear so people can see my eyes and not their own reflection. 

But, as Dave explained to me, there's a new kind of anti-reflective coating. His lab, Hoya, calls it Recharge. It's works similar to the traditional anti-glare coating, but it goes a step further. It protects against the blue light emanating from computer screens, tablets, back-lit eReaders, and smart phones. 

See, there's something called a visible light spectrum, and it's basically what it sounds like. Within this light spectrum, there's good blue light that regulates our sleep patterns and then there's bad blue light that basically messes up those patterns. Overuse of devices can cause Computer Vision Syndrome (CVS) and Digital Eye Strain (DES). Symptoms include headaches, blurred vision, and fatigue.

Once David left our office, I ordered the lenses he'd suggested and then waited impatiently for them to arrive shiny and clear and beautiful. 

They did. And they are amazing. 

(While the traditional AR coating has a green sheen, Recharge has a blue sheen. I've tilted the glasses so you can see the sheen. The top picture is viewing the lenses straight on and you can see they are clear.) 

My eyestrain after a day of editing on the laptop has been cut down considerably, if not altogether. And a headache is no longer a part of my nightly reading sessions on my Kindle.    

Next time you're finishing up with your eye exam and picking out frames, make sure to ask for the Recharge coating on your lenses in lieu of your regular anti-glare coating. I think it's a great step up in eye-care technology, especially for those in my publishing industry. 


  1. Ooh, I'm going to have to bookmark this, since I wear glasses and tend to be on the computer for hours when coloring art. Thanks for the heads-up about this lens coating!

    1. I'm so glad the info can be helpful to you. :) I can't wait to see your new glasses.

  2. That's good to know but I just had corrective surgery done so I don't have to wear glasses anymore lol.