In addition to conventional LASIK eye surgery, a newer form of vision loss treatment may soon become available. An interesting breakthrough in eye surgery has resulted from an experimental approach to treating vision loss related to bright light exposure. The treatment has been proven effective in treating patients exposed to both bright artificial and natural sunlight.
In Australia, physicians are experimenting with the use of near infrared light as a vision loss treatment option. The procedure is to be performed as a pretreatment to control scar tissue behind the retina that may be compromised as a result of constant light exposure.
Muller cells act as special cleansing agents to the eye, removing toxins and facilitating the healing process to the injured eyes. The cells have a tendency to become overly active under stress, causing overgrowth. When overgrowth occurs with these cells, scar tissue rapidly accumulates in the concentrated area near the retina. The excessive scar tissue causes the vision cells to malfunction and eventually stop working altogether. Additionally, the scar tissue blocks the blood supply to the outer portion of the retina. When the vision cells are deprived of oxygen, nutrients and glucose, they are unable to thrive.
The near-infrared procedure prevents overgrowth of these cells. The procedure has been tested in those with minor vision loss related to bright light exposure. Researchers found that approximately 670 nm units are needed in a pretreatment procedure to control Muller cell activity.
Until the procedure becomes widely available, LASIK eye surgery physicians recommend that individuals follow these recommendations to minimize risk of vision loss related to certain types of light exposure.
• Sunglasses should be worn throughout the year, especially during months of intense sunlight.
• The sunglasses should offer at least 95 percent UV protection. There are sunglasses available that offer 100 percent protection against UV exposure.
• Checking the tint on the glasses is also recommended, 80 percent is suitable for most individuals. Experts advise that people look for glasses with amber, brown, green, or neutral gray tints.
• The sunglasses should also be able to block light from various angles, especially overhead light.
• The sunglasses should also inbound light from the sides of the sunglasses.
In general, individuals should be cautious as to avoid excessive exposure to both bright and natural light. Bright light taken in at smaller amounts can still have a lasting impact on the vision.
