Have you decided to purchase your prescription eyeglasses online? Hopefully, you have decided what kind of eyeglasses you will need. You see, options are not limited to what type of frames you want. In fact, even bifocals and trifocals have different options with varying half moon sizes. Yet, here are some items to help you with your decision when purchasing your prescription eyeglasses online.
Prescription eyeglasses buyers guide
Hi-index lenses may be an option for those individuals who require 4 or more diopters of correction. You see eye disorders are measured in units called diopters. The more diopters needed to bring your vision to the standard 20/20, the heavier the lenses will be in your prescription eyeglasses. However, with Hi-index lenses you can have thinner, lighter lenses for your prescription eyeglasses without compromising clarity.
If you are like many people who are now learning of the damaging effects of the sun, you may be interested in UV protection. Well, you may be interested in transition lenses for your prescription eyeglasses. These lenses that are made of plastic, change color as you move from inside light to the UV rays of the sun. These lenses are a great choice for your prescription eyeglasses as they come in thinner varieties for those with heavier prescriptions.
Prescription eyeglasses are also available with photochromatic lenses which are similar to transitions. These lenses come in all varieties including single, biofocal, trifocal, and progressive lenses. These prescription eyeglasses also come in a dark photochromatic lense that is thinner and lighter.
Eyeglasses - A Consumer Guide
Progressive lenses may be an alternative to bifocals. You see, these lenses have a gradual increase in correction going from no correction at the top to maximum correction at the bottom. These prescription eyeglasses make it possible to change the correction you are using by changing your line of sight.
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