Spring Fever Sale

Spring is almost here! Now is the time to add the final touches to you spring and summer wardrobe with some new sunglasses or prescription sunglasses from the top brands including Oakley sunglasses, Maui Jim sunglasses, Nike sunglasses, Coach sunglasses, Fendi sunglasses, Gucci sunglasses, Sigrid Olsen sunglasses, Joseph Abboud sunglasses, Tommy Bahama sunglasses and more.

All sunglasses are on sale with an additional 10% off of any order over $200. FREE SHIPPING on ALL orders!

Also check out our selection of Prescription Sunglasses

1. Prescription Nike sunglasses
2. Prescription Coach sunglasses
3. Prescription Fendi sunglasses
4. Prescription Gucci sunglasses
5. Prescription Oakley sunglasses
6. Prescription Maui Jim sunglasses
7. Prescription Tommy Bahama sunglasses
8. Prescription Sigrid Olsen sunglasses
9. Prescription Joseph Abboud sunglasses

What is Pupil Distance (PD) and why is it important?

If you have ever bought prescription eyewear on the internet you have probably seen the term PD or pupil distance.  This refers to the distance between the center of the pupil in one eye and the center of the pupil of your other eye.

When you go to get your eye exam they will usually take this measurement, but it usually isn’t found on the copy of your prescription that you receive.  This measurement is a very important one.  If you do not have an accurate PD measurement the lenses in your glasses or prescription sunglasses may not line up correctly with your pupils causing blurred vision.  This is especially important if you are purchasing prescription sunglasses that have a large amount of wrap.  Wrap is when the design of the frame and lenses curve to fit closely around the contour of your face.

As you search for glasses or prescription sunglasses on the internet you will find many people who will tell you that you can find your own pupil distance by looking in a mirror and marking your pupils or a number of other ways.  This may work in some cases, but it is not the most accurate way to determine your PD.  It is recommended that you contact the office where you received your last eye exam and ask them if they have it on hand or if you can be measured.  You will be much happier with your online glasses or prescription sunglasses if you have an accurate measurement

Article by Ryan Steed

New Year Sale!

Remember to take advantage of our New Year Sale going on through February 29th.  Take an additional 15% off of the already incredibly low prices on all Coach sunglasses, Fendi sunglasses, Nike Sunglasses and many more.  Don’t forget that PrescriptionShades.com does both prescription sunglasses as well as non prescription sunglasses.

Remember to use the promotional code:  resolution when you check out

What is astigmatism and why do I have it?

Astigmatism is a fairly common condition of the eye with approximately 1 in 6 people being affected in the United States. First of all, astigmatism affects the cornea of the eye, which is a transparent layer forming the front of the eye. A healthy cornea is spherical and is usually compared to a basketball. Astigmatism is when the cornea becomes misshapen and begins to look more like a football. So what does this mean? Most astigmatisms have two curves, one that is steeper and one that is flatter. The cornea, which usually allows light passing through the eye to focus at one point, now causes the light passing through the eye to focus in more than one spot. This causes your brain to try to interpret the two images and results in blurry vision. Now this is different than being nearsighted or farsighted, which is a matter of light focusing in front of or behind the retina. So now that you know what astigmatism is, lets talk about why you might have it.

Many people that have astigmatisms were born with misshapen corneas, which were more oblong than spherical, so you can thank your parents and the genes they gave you. There are also other causes of astigmatism like excessive pressure being put on the corneas by the eye lids, increased use of they eyes for up-close work, and injury to the eye or cornea. Often people who have surgery on their eyes will have temporary astigmatism until the cornea has healed completely. Lucky for us, especially those of us will bad genes, astigmatism is easily corrected by wearing contact lenses, or other corrective lenses.

Article written by: Ryan Steed

The Lowdown on UV

It is crucial to receive the right amount of light to have good vision, but too much exposure to the wrong type of light just might result in serious long-term problems. When our eyes are exposed to excessive amounts of ultraviolet light (UV) wavelengths can cause eye conditions including corneal burns (photokeratitis), growths on the conjunctiva (pterygium) and cataracts. UV rays are invisible, and that only makes them more harmful.

Ultraviolet radiation, more commonly referred to as “UV Rays,” is a part of the electromagnetic spectrum and is produced by the sun, tungsten lamps, welding arcs, and certain types of fluorescent lights. It consists of three categories: UVA, UVB, and UVC.

Fortunately, UVC (190nm to 280nm) wavelengths are absorbed by the ozone layer so for now we don’t have to worry about them. However, these high-energy radiations can cause mutations in plants and animals. UVB wavelengths (280nm to 315nm) are also higher energy and can cause sunburn, skin blistering, and skin cancer. Since none of us really enjoy any of these things we wear sun block on sunny days. (Right?) The upper portion of this spectrum (from 300nm to 315nm) is where we start to see effects on the eye. UVA (315nm to 380nm) is the section of the spectrum that hurts the most because it is totally absorbed by the eye’s crystalline lens. (Ouch!)

Our corneas transmit UV wavelengths from a range from 300nm to 400nm, so it becomes important to us and especially to our eyes to filter these wavelengths out. That is where lenses come into play. Lucky for us, the American National Standards Institute (ANSI) has mandated that lenses be made with materials that absorb or block at least 99.8% of UVB and 70% UVA.

Ultra-violet radiation may be harmful to the human eye, but with all the lens material options available today that absorb it, patients can easily get the protection they need simply by getting a good pair of glasses or sunglasses and remembering to wear them.

Article Written by: Ryan Steed

Prescription Sunglasses Basics

The sun emits three types of rays: visible, infrared and ultraviolet (UV). The UV rays are the biggest culprit in regards to eye damage. Exposure to bright sunlight over time can damage the cornea, lens and retina. Some of diseases associated with prolonged exposure to bright sunlight are pterygium (a fleshy growth on the corner of the eye), cataracts (clouding of the lens), and macular degeneration (a breakdown of the macula).

Hopefully after being educated on how serious exposure to harmful UV rays can be, people will choose quality sunglasses that are capable of blocking these harmful rays. There are many options available and there are even options for those who need corrective lenses.

Prescription sunglasses are specially designed for people who need corrective lenses but want to be more fashionable than the normal clip-ons or who just want to avoid the hassle of clip-ons. Now many popular sunglasses companies such as Oakley and Revo make fashion appealing prescription sunglasses.

Prescription sunglasses are purchased based upon the power of the lens as prescribed by an oculist. The special lens has the capability of either magnifying or diminishing images determined by the needs of the user.

Prescription sunglasses are designed to protect the user from the harmful ultraviolet radiations of the sun. A special polarized lens can also help protect the eyes from glare from light reflecting surfaces such as water or snow. Photo-chromatic sunglasses are becoming popular because of their ability to darken in the sun and lighten up indoors.

Until recently prescription sunglasses were not available in the wraparound style because any curvature of the lens would cause distorted vision. However, many are available with a little wraparound making them more appealing to consumers.

Custom made prescription sunglasses are generally higher priced and usually no refund is offered. Make sure you work with a reputable company that offers quality prescription sunglasses and service.

Written by: Ryan Steed

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