Computer glasses are lenses that are meant to correct the eye problems that may occur when looking at a computer screen for longer periods. If you've ever felt headaches or discomfort while spending hours in front of your computer, these specialized glasses may help.
Some people who feel pain, fatigue, and even nausea after working on their computers for too long suffer from digital eye strain or Computer Vision Syndrome (CVS). It is not an actual medical condition, but rather a temporary vision problem that has other symptoms like itchy eyes and blurred vision.
The condition occurs because our eyes are not used to extended sessions of near-work activity like working on the computer; therefore they become tired faster than usual. Another aspect of CVS is dry eyes, which result from insufficient blinking or reduced tear production.
According to the American Optometric Association, some ways to reduce the risk for developing CVS are: avoiding glare on your computer screen by placing it in a shaded area, getting up regularly and looking at distant objects, resting eyes every 20 minutes, wearing wraparound glasses with side shields to prevent excluding light around the frame of your glasses or wearing specially designed lenses that mimic the blurred vision you would get without your corrective lenses. These types of lenses are called computer lenses.

Sleep Disruption and Its Effects

Melatonin is a hormone that regulates sleep and waking patterns in the body. Darkness encourages the formation of melatonin, which helps you get ready for bedtime. Melatonin production is halted when exposed to bright light, suggesting it's time to wake up. The body receives conflicting instructions while relaxing in bed, watching TV, or surfing social media. These activities are usually done in a lit room, which means the melatonin is blocked from being produced.
Exposure to bright computer screens can delay melatonin production significantly 1-3 hours longer than if you were reading an e-book or watching TV. That's because these other types of screens don't emit as much light. For example, while using your laptop in dim lighting conditions may cause eye strain, it won't disrupt your melatonin levels very much compared to using it under strong lighting or sunlight. The more intense backlighting found on small devices also isn't good for sleep. The emitted blue light blocks the production of melatonin, so exposing yourself to electronics before bedtime delays your ability to fall asleep and get quality rest.

How Do Computer Glasses Work?

Computer glasses are also known as digital eyeglasses, computer reading glasses, or computer bifocals. These spectacles have lenses with an anti-reflective coating that reduces the amount of blue light being reflected off your screen. Studies have found that using a filter on your laptop, tablet or smartphone reduces melatonin suppression by 50%. Computer lenses block blue light 2 to 3 times more than general-purpose lenses do.
Computer glasses can be composed of prescription or non-prescription lenses. The lenses have an anti-reflective coating that blocks light reflections from both the front and back lens surfaces, reducing screen glare and blue light exposure. Lenses are tinted to enhance screen contrast and make it easier to see pictures onscreen. Three types of computer lenses are available.