Dry Eye:

Dry eye is a symptom that is targeted in the therapy of Computer Vision Syndrome (CVS). The use of over-the-counter artificial-tear solutions can reduce the effects of dry eye in CVS. Prior to using artificial tear solutions, it is necessary to check if dry eye is the actual cause of the problem (measured by a tear meniscus test) or whether there are no actual symptoms of dry eye at all. Dry eyes because of CVS can also be treated using moisture chamber glasses or humidifier machines. Office spaces with artificially dry air can worsen CVS syndromes, in which case, a desktop or a room humidifier can help the eyes keep a healthy moisture level.

At night, CVS can become worse. It is recommended to use a dark user interface while working at night on the computer. Several browser and OS add-ons exist to darken the user interface.

When working on computer screens people tend to blink less which leads to the eyes drying out faster. Reminding people to blink or do blinking exercises is achieved via static reminders (such as eyeleo).

A number of computer and smartphone applications, such as f.lux, redshift and Night Shift adjust the computer video colour temperature, particularly at night. These devices give temporary relief since they cannot block HEV. Researchers at the Lighting Research Centre at Rensselaer Polytechnic Institute have warned that people who use digital device with an app designed to manipulate blue light intensity versus placebo, resulted in no change in melatonin suppression. This means that, apps which changes screen colour (orange) by increasing yellow light and relatively decreasing other colours cannot protect eyes (because they cannot block emission of blue light).

Real-time feedback-based blink reminders (such as Vision Protect) actively measure the blinking rate of the user and notify the user via visual / audible alert. The effectiveness of real-time feedback-based blink reminder systems is proven in a study by Osamu Fukushima and Masao Saito.

What is dry eye?

Dry eye occurs when the quantity and/or quality of tears fails to keep the surface of the eye adequately lubricated. Experts estimate that dry eye affects millions of adults in the India. The risk of developing dry eye increases with advancing age. Women have a higher prevalence of dry eye compared with men.

What are the symptoms of dry eye? 

Dry eye causes a scratchy sensation or the feeling that something is in the eye. Other symptoms include stinging or burning, episodes of excess tearing that follow periods of dryness, discharge, pain, and redness in the eye. People with dry eye may also feel as if their eyelids are heavy and may experience blurred vision.

To understand how the eyes work, it's important to know about their structure and about conditions and diseases that can interfere with vision.

Macular Degeneration

Macular Degeneration that causes blindness is caused by the deterioration of the central portion of the retina, the inside back layer of the eye that records the images we see and sends them via the optic nerve from the eye to the brain. The retina’s central portion, known as the macula, is responsible for focusing central vision in the eye, and it controls our ability to read, drive a car, recognize faces or colours, and see objects in fine detail.