No, eye black doesn't completely block the sun. Instead, it helps reduce glare and improve visual contrast.
How Eye Black Works
Eye black, a dark grease or stick applied under the eyes, primarily works by absorbing light. This absorption reduces the amount of glare reflecting off bright surfaces like the sun or stadium lights, improving an athlete's ability to see details and contrast. Think of it as a localized, temporary solution similar to the black interior of a baseball cap's bill – it doesn't eliminate the light, but it minimizes its distracting effects.
Several studies support this. A study by Benjamin R. Powers at the University of New Hampshire showed that eye black effectively reduced glare from the sun, particularly in women and those with non-blue eyes. Other research, like that from Yale University, indicates that eye black grease is more effective at reducing glare and improving contrast than anti-glare stickers.
Numerous testimonials from athletes corroborate this effect. Many describe an experience akin to wearing sunglasses, enhancing their vision without the overall darkening effect of sunglasses.
Who Benefits from Using Eye Black?
While beneficial to many, the effectiveness of eye black can vary depending on individual factors, such as eye color and the intensity of the light source.
- Athletes in bright sunlight or stadium lighting: Eye black's primary benefit is for athletes playing in high-glare conditions.
- Individuals with light-colored eyes: These individuals might experience a greater reduction in glare compared to those with darker eyes.
The Limitations of Eye Black
It's crucial to understand that eye black is not a complete sun block. It does not provide UV protection and will not entirely eliminate bright light. Its main function is to improve visual comfort and contrast in bright conditions.
