How Are Computer Reading Glasses Different From Reading Glasses?
Computer reading glasses are reading glasses whose lens strength is determined by the distance you view your computer screen and are used specifically for reading at your computer.
The lens strength in reading glasses was measured based on customary book reading distance of 14-16 inches. Computer reading, is typically 18-22 inches but many times may vary depending on how far your computer screen is from your eyes.
All day digital device use puts strain on the eyes muscles. Computer readers helps relax those muscles.
The further away you view your computer monitor the less lens power you will need to relieve your computer eyestrain.