Education – Information
5 Crucial Steps To Getting The Most From Your Eyewear
When it’s time to purchase new prescription glasses or contacts for you or your family, here are a few tips to remember. Eyeglasses and contact lenses are considered a prescription medical appliance. As such they are protected by law and must be dispensed by a quqlified professional, and only in person.
We all know that to get a prescription for glasses we must see a Doctor. But did you know that your prescription for vision aids, just as your prescription for pills, must then be filled by a government-certified professional? read more
- Interpreting your prescription: A precise understanding of how you will use your glasses, in other words – your lifestyle, dictates which lens option is best for you. Different lens designs have trade-offs in performance. The goal is to match your glasses to your routine. Your eyes will suffer less fatigue.
- Selecting the right frame: The frame is NOT just “a-front-piece-with-two-sides”, as the spokesperson for the on-line glasses site claims. The frame must work to hold your prescription lenses in proper place in front of your eyes. Otherwise you can’t see properly, or you get a kink in your neck trying to see out of the proper spot.
- Selecting the right lens material: Glass lenses are the heaviest material. But they are very scratch resistant. They are also limited to “safe” activities. Polycarbonate lenses scratch quite easily, but are thinner and lighter than glass, and very impact resistant. Acrylic lenses are the most commonly used lens material today. Lightweight, impact resistant, but much more scratch resistant than polycarbonate. Acrylic lenses can be moulded in many indexes (thicknesses).
- Measurements: Optimal performance of your eyeglasses is dependant on precise facial measurements, and the relationship these measurements have with your frame and lenses. Each eye has a different optical center, and usually a different pupil distance. A frame that has a wrap-style changes the way light rays enter the eye, and this means the prescription needs to be compensated. Deviance from the proper measurements can create un-prescribed changes which cause eye strain.
- Final fitting and adjustments: This last step ensures maximum performancs and safety of your new eyeglasses. We also invite a follow-up visit, just to check the performance of your eyeglasses after you have had a few weeks of wear.
Sun Lenses – Which Color Is Best?
White light passes through the human eye and stimulates photoreceptors in the retina. A series of reactions take place that turn the light into electrical signals which the brain turns into an image.
The human eye sees white light as its component colors – violet, blue, green, yellow, orange, and red. The invisible ultra-violet light also passes into the eye (even though some is absorbed by the eye’s natural lens).
If a colored lens is placed in front of the eye three things happen to the white light: some light is reflected from the surface of the lens, some light is absorbed by the lens,