Over the last several years, as hand held devices like cell phones, iPads, and tablets, have become more popular, some people are experiencing symptoms like, headaches, dizziness, and even insomnia. Recent studies have suggested that the blue light emitted by these types of devices is the source of these problems. I have had several people contact me with questions regarding the symptoms they are experiencing while using these devices especially if you work on your computer all day. If, after reading this article, you decide this type of glasses are right for you then check out the best blue light blocking glasses over at ilovebuttercoffee.com.
Blue Light is the spectrum of light that is of concern is the near part of the UV-A band called, Near UV-A. It has been known for some time that UV light, both UV-A and UV-B, can be harmful to the eyes. Recently, studies have shown that Near UV-A could also be harmful.
Devices That Emit Blue Light:
- Cell phones
- Computer monitors
- Fluorescent lights
Symptoms and Problems
People using these devices have reported symptoms like loss of focus, headaches and insomnia. Loss of focus and headaches could be the result of not having proper corrective reading or computer reading glasses and/or focusing intensely for long periods of time at a near point and losing accommodation. Symptoms like dizziness or insomnia are not typical however, and point to another cause or causes, thus the studies.
Prescription glasses or reading glasses with blue blocking lenses. These lenses have a special type of tint with a yellow or yellow amber color and UV A and B filters. While good quality sunglasses should block UV you wouldn’t want to wear them while reading at night. There are several types of no-power glasses that are designed to filter out blue light, Near UV-A and UV-B. The magnification you choose depends on how far away you read your chosen device. If you read at about 12 to 14 inches, then your full reading power is what you would want. If you read at about arm’s length, then half of that power would be what you would select.The best way to determine your reading power is to get an eye exam, but there are simple exams that you can take online, that if performed carefully, can provide good results.