Sunglass Terminology
Posted in Uncategorized on 05/06/2009 06:50 am by Shoreline of Tahoe
Your Eyes Work Hard
Seeing is a highly active function. Your eyes continually focus and adjust, receiving a constant flow of colors and visual impressions. Normally, all this activity happens routinely and without noticeable strain.
The Burden of Glare
to see well, causing eye fatigue and headaches.
The Benefits of Top Quality Sunglasses
This is why quality designed sunglasses are such an important part of our outdoor life. They help us to see comfortably and clearly in sunlight, to counteract the discomfort caused by bright light, and to protect our eyes from glare. This brilliant, sometimes blinding light is intensified when it reflects off water, snow, concrete highways, glass buildings or chrome. Glare is discomforting, causing your eyes to work harder. Your pupils contract, your eyelids squint, and the muscles around your eyes contract. Your eyes must work harder to prevent permanent damage that could lead to cataracts, eye diseases, and even blindness. Lesser quality sunglasses are often more of a danger than a help. Lenses may not provide proper protection from UV rays and glare and are often marked with blurry, irregular surfaces that distort vision, causing added eye strain and fatigue. Top quality sunglasses provide relaxed comfort and complete protection even during long exposure to harsh glare.
Year-Round Protection
Your eyes need glare protection year round. The winter sun is often brighter and snow-reflected glare can be more intense than the brightest summer day. In the mountains the sunlight can be 4 times more intense than at sea level. Damaging UV rays are present year-round and throughout all daylight hours.
Night Driving
Wearing sunglasses during the day can help improve your night driving. Exposure to strong sunlight without adequate glare protection can sharply hinder your night vision. Even a few hours of exposure can slow your eyes’ adaptation process as darkness falls.
Repeated exposure can delay this adaptation even longer and your night vision could be cut by 50% or more.
