When the sun is shining, eyeglass wearers wish for sunglasses that still allow the wearer to see where they are going. There are clip on or magnetic attached sun lenses, along with lenses that adjust their tint for outdoors. However, people want to choose their own fun style of sunglasses, not their glasses frames. This where prescription sunglasses are a good choice.
Contact lens wearers can also invest in prescription sunglasses. Outdoors, contact lens should not be worn on the beach or a lake. This causes the eyes to become itchy and watery with the sand, sun, wind, and water irritating the contacts. Wearing contact lenses while swimming is a bad idea because of potentially serious eye infections caused by microorganisms in the water.
Prescription sunglasses are available for almost every lens prescription including bifocal and progressive lens options. These are used if the wearer is presbyopic and need lenses to help read literature in the sun. These types of sunglasses can also help if the wearer needs reading glasses or if contact lenses are worn to correct distance vision and still need a boost for reading.
The styling of prescription sunglass frames is nearly the same as with non-prescription sunglasses. Almost all of the same fashion, designer, and celebrity eyewear options are usually available due to the high demand for prescription sunglasses.
Availability is limited when it comes to certain wraparound sunglasses that curve around the head, used in sports. Prescription sunglasses with extreme curves can distort vision. Several manufacturers offer wraparound prescription sunglasses with less extreme curves. These are usually available in a limited prescription range. Discuss options with an optician.
Prescription sunglasses are available in all lens materials including high-index, polycarbonate, regular plastic, glass, and Trivex, a lightweight material similar to polycarbonate. Glass lenses arguably provide the best optical quality but they are no longer the most popular choice for sunglasses. They are heavier than lenses of other materials and shatter easily.
Wearers can also purchase prescription eyeglass lenses with a photochromic tint. These are called transition lenses. Photochromic lenses automatically darken in the sunlight and return to a clear state indoors. Photochromic lenses are convenient but UV rays are required to activate the tint. Most car windshields block UV, so these lenses do not darken well in cars.
Ultimate prescription eyewear suitable for all lighting conditions includes eyeglasses with photochromic lenses and a frame with integrated magnetic clip on sunglasses. Photochromic lenses provide automatic sun-sensitive light adjustments for greater comfort in the sun. Clip on sunglasses conveniently store in the car for bright and sunny days that require a darker driving lens.
The primary concern when buying prescription sunglasses is that lenses block 100 percent of the sun's UV rays. UV protection is unrelated to the color and density of the tint in sunglass lenses. Choose any lens color and darkness the wearer prefers, but make sure the optician verifies that the lenses provide complete UV protection.
For added glare protection from light bouncing back from reflective surfaces, such as water, snow, sand, and concrete pavement, prescription polarized sunglasses are available. Light reflected from surfaces is horizontally polarized. Instead of being scattered in all directions in more usual ways, reflected light travels in a horizontally oriented direction. This creates dangerous light intensity.
Polarized lenses contain a special filter that blocks this type of intense reflected light, easily reducing the glare. Polarized sunglasses improve comfort and visibility, but sometimes these lenses are not advisable. For example, if skiing downhill, light that is blocked from reflecting off icy patches can cause danger to skiers as they approach hazards.
Polarized lenses can also reduce the visibility of images produced by LCD and LED displays found on car dashboards, digital screens, ATMs, cell phones, and GPS devices. For most other sports and activities, polarized sunglasses offer great advantages.