Understanding the Human Eye: How It Works

Most people go throughout their day being constantly bombarded with visual input, yet never stop to think about the amazing transformation this information must go through in order to be processed by the brain. None of it would be possible without one of the most complex organs in the body: the human eye. Through research in the field of optometry, people today have a much more accurate understanding of how this process works.

Understanding How the Eye Works 

First, light travels through the cornea, which is the clear covering over the eye that acts as a window. The cornea bends the light, allowing it to pass through the narrow pupil. A lens behind the iris helps to either shorten or lengthen the light rays to ensure that the image is focused. The retina lies at the back of the eye. The light rays come to a point at the retina, which receives the crystal-clear image in its network of nerve cells, then transmits it to the optic nerve. The optic nerve carries the image to the brain. The most amazing part of this process is that it happens at lightning speed, over and over again throughout the day.

How to Care for the Eyes

With these incredible organs working overtime, it's important to take good care of them. The most important step in taking care of the eyes is scheduling regular checkups with an optometrist. This will help determine if there are any ongoing issues, and can hopefully help to detect issues early before they become more serious.

The eyes require certain nutrients to keep them healthy between checkups, so eating a well-balanced diet will help keep them healthy. Protecting the eyes from damage is also important. Sunglasses can help protect the eyes from the harmful UV rays found in sunlight, and safety glasses should be worn in hazardous conditions. Thanks to the wonders of optometry, the eyes can continue to process countless messages per day, all without people ever noticing. To keep your eyes healthy longer, contact Excellent Vision in Portsmouth today.

Tips for Reducing Damage From Computer & Phone Screens

In the modern world, it's nearly impossible to escape the glow of computer and phone screens. Whether for work, entertainment, communication, or all of the above, screens have become a ubiquitous feature of life in the 21st Century. All that time spent staring at a device or computer can place considerable strain on the eyes. Today's eye care requires consideration of the effect screens have on vision. Try these tips for reducing eyestrain. For more information, seek expert advice from the doctors at Excellent Vision.

Use Proper Lighting

While it's generally good to have abundant natural light in an office space, it can cause unnecessary strain on the eyes. Overhead fluorescent lights also cause glare which forces the cornea to take in more light than is healthy just to maintain focus. Try reducing outdoor light by drawing shades or blinds when working at the computer. If possible, place a workstation so that the windows are to the side, rather than directly in front of or behind the screen. Swap overhead lights out for floor lamps with shades that provide indirect lighting.

Take Breaks

Sometimes people get in the zone when they're working, and there's nothing wrong with that. Studies have shown, however, that eye care is greatly helped by taking frequent short breaks. Rather than one or two long breaks, workers who take five or more mini-breaks experience less eyestrain and maintain productivity.

Get a Regular Eye Exam

The surest way to avoid long-term damage to the eyes is to schedule a comprehensive eye exam. Individuals who spend more than six hours per day working at a screen should have their eyes checked at least once annually. During the eye exam, inform the doctor how much time is spent staring at a screen and ask for further tips on avoiding screen-based eyestrain.

The professionals at Excellent Vision have earned a reputation as leaders in Ophthalmology and Optometry in the Seacoast Region. For expert eye care and professionalism, visit Excellent Vision at any of our three locations.