My ophthalmologist gave me a new prescription about a year ago. The change in the lenses was small albeit noticeable. Not feeling impaired, I did not order new glasses. A few weeks ago, I became annoyed that my glasses had accumulated a few scratches and were increasingly difficult to clean. Then, 10 days ago, I stretched one of the ear pieces out of shape as I removed my KN-95 mask. Merde!
I decided to surrender to the inevitable, and I ordered new glasses. I have ordered my glasses from Zenni online for over a decade, and I am very satisfied with their products. I forked out a few extra shekels on this order for a blue light photochromic coating since I spend a fair amount of time in front of the computer. The new specs arrived yesterday, and they are a remarkable improvement.
As I opened the package yesterday, I noticed that the company had included a laser pointer that produces a blue beam of light. The instructions asked me to shine the laser on my glasses as they sat on a white background. I did so, and I subsequently noted that the photochromic coating had turned brown wherever the laser light had hit the lenses. Cool!
To what extent the filtering of blue light prevents eye fatigue, the progression of cataracts, the onset of Alzheimer’s, the worsening of erectile dysfunction or any other malady, I cannot say. All that I can say is that cats do not respond to the blue light dot from the laser.