In our latest blog post we are going to look at what Photochromic reading glasses are, how they work and how they can make your life more convenient. What are Photochromic Reading Glasses and How do they Work? Photochromic or light adaptive lenses, were invented by William H. Armistead and Stanley Donald Stookey in the 1960s. These special lenses have the ability to change colour in certain situations. When the apparently clear lenses are exposed to sunlight, they become tinted, turning into sunglasses in a matter of seconds. Since they were…
Tag: health
Blue Light Reading Glasses – Infographic
What is blue light and why is it harmful? 1. Blue light is part of the visible light spectrum: AKA what the human eye can see. It has the shortest wavelength and the highest energy. The most significant source of blue light is sunlight. 2. There are some benefits of blue light including increased alertness, as well as helping to improve your memory and cognitive function. Prolonged exposure to artificial blue light is thought to be harmful. 3. Continued exposure to artificial blue light is thought to damage retinal cells…
Blue Light Blocking Glasses…Here’s What We Know…
What exactly are Blue Light Glasses? How may we all benefit from wearing them? We hear you ask… “I’d heard of Blue Light Blocking Glasses before: they were yellow, ugly and not worth the laughter I would get from both roommates and fellow workers if I wore them regularly.” Gina Tomaine recently wrote in ‘Good House Keeping’ Magazine. Firstly… What is Blue Light? What we see – the visible spectrum of light – consists of a range of colours, from blue-violet on the lower end to red on the higher end. Light on…
The Importance of Half Strengths and Lens Quality
Costing as little as £1 it is easy to see the appeal of over the counter reading glasses, especially as we get older our sight invariably deteriorates, but everyone is unique and we all have different requirements for glasses. Some find they may need glasses early on in life to help with driving or working at the computer, whereas others will find it more difficult to read the small print, but how do you know if you need reading glasses? As we get older we can develop an age related condition called Presbyopia…