Traditional LASIK surgery achieves a simple correction of focusing power by reshaping the cornea with the aid of a laser. Wavefront LASIK is a variation of that conventional procedure and accomplishes a spatially varying correction based on readings from a wavefront sensor. In essence, a wavefront sensor measures the eye itself. Wavefront measurements reveal the irregularities of the lens, which cause optical aberrations (any deviation from a desired perfect planar wavefront). Wavefront custom sculpts the cornea to accomplish corrected vision. In many ways, Wavefront offers better results than traditional LASIK. LASIK has certain potential side effects including halos or glare, which are caused due to induced spherical aberration. Anyone considering Lasik laser eye surgery will welcome the introduction of wavefront technology into the process. It gives the eye surgeon the information needed for a more effective and successful procedure. Eye surgeons now have available a new technology that makes vision correction more precise. It’s called “wavefront”.

To correct poor vision Lasik eye surgery has become the popular choice. Lasik surgery links the condition of the patient’s visual system to the Lasik laser for correction. The incisions performed on the cornea of the eye are customized to the patient’s individual needs. Accurate data concerning the condition of the patient’s eyes is all important. Wavefront technology is a technology that is capable of measuring refraction at multiple points on the eye as light is reflected upon it. This creates a “map” of the patient’s eye. Because each eye is unique the data from each eye must be carefully analyzed so that the Lasik laser maybe properly programmed. Conditions within the cornea of every eye affect refraction. The ability to treat these aberrations can result in an improved outcome after Lasik surgery. Clinical trials using wavelength technology have shown that nearly 80% of Lasik eye surgery patients undergoing custom surgery achieved 20/20 vision.

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All people should wear designer sunglasses for protection from the damaging rays of the sun. Glasses that block out HEV, UVB and UVA light are the ones that are recommended. These will protect your eyes from at least possible skin cancer and cataracts.

Shade from glasses, is not only meant to keep you from having your eyes half closed when you are enjoying the outdoors or when driving. Dark glasses are not available so you look good. The reason for glasses that give shade to ones’ eyes is protection.

Exposing unprotected eyes to excessive amounts of ultraviolet rays over a short amount of time can cause photokeratiis, or sunburn in the eyes. This can be painful, and give you the feeling of having sand in your eyes. This is usually only temporary and hardly ever causes permanent damage to the eyes. However, long term exposure to this can be more serious. Which is why people need to be made aware of why they need to wear glasses that shade the eyes.

Researchers have found that long term exposure to UVA rays can be the cause of damage to your retina or cataracts. Extended exposure to UVB rays can lead to skin cancer around the delicate eye area. Short term exposure to UVB can inflame the cornea of your eye which can cause temporary blindness that can last up to 48 hours.

There is proof that before the age of eighteen, children are exposed to eighty percent of the sun they will experience in a lifetime. This is because kids spend more of their time outdoors than they will when they are adults. It is extremely important to make sure your child has protection for their eyes. Try to find glasses that will give ninety nine percent protection from both UVB and UVA rays.

Try to find glasses that absorb up to 400nm. This is the same as a label that reads one hundred percent UV protection. Either plastic or glass lenses that have these labels will be fine for blocking out damaging rays.

The light that bounces off pavement or other smooth surfaces like water is called glare. Polarized lenses will cut down on glare but do little to protect your eyes. UV protection can be combined with polarized lenses so that you get both glare reduction and protection.

UV protection is not based on the color of the lens in your polarized sunglasses. It will not matter if your lenses are dark or a light colored brown. Color only matters for blocking out HEV radiation. HEV is also known as blue light or high-energy visible radiation.

High-energy visible light does have lower energy than ultraviolet light but the rays penetrate deeply into the eye and can cause retinal damage. For glasses that protect against damage from HEV light, a bronze, copper or reddish brown color is best. These would be called blue blocking lenses. It is possible to get all of the protection you need in one lens.

It is easy to understand why good designer sunglasses are important for everyone. Everyone may not need polarized lenses but everyone does need to protect their eyes.