Tuesday, November 11, 2008

Hot Reading Glasses Styles

By Paloma Lillian

Is it necessary to get an eye exam even if I am satisfied with my ready made reading glasses?
Definitely. The use of readymade reading glasses is perfectly safe but does not replace the need for regular eye exams. There are many silent robbers of vision that if caught early can be easily treated or prevented. Glaucoma is a perfect example of an eye disease that is often asymptomatic and will remain undetected without regular eye exams.If there is no value under the cylinder heading, then you have a simple prescription. If there is a value under this heading, then you have astigmatism.

What are my options for the reading glasses at NeoVision?
You can order your own custom reading glasses by choosing any of our eye glass frames and adding reading lenses in your unique prescription. You will be able to order glasses with clear prescription lenses or with tinted prescription sunglass lenses with anti-scratch, anti-UV, and / or anti-reflective coating. You will also have a choice of lens materials such as CR-39 plastic, polycarbonate, Trivex, or hi-index.Light rays passing through the optical center (OC) of a lens are not refracted. With proper PD measurements, your eyes are centered at the optical center of the lens. For taking your unique fitting measurements, your physical presence is absolutely necessary. We will need to pre-adjust the frame on your face before ordering your glasses.

Can you raise segment height by adjusting the frame on my face?
Yes, the seg height can be raised either by bringing the nose pads together or by adding a pantoscopic tilt.Lenses with anti-reflective coating.

Why do children need sunglasses?
Children are at a higher risk from the harmful effects of UV since they generally spend more time outside in the sun. Select sunglasses that suit your child’s active lifestyle. The lenses should be impact resistant i.e. made of polycarbonate.Your eyeglass prescription contains information regarding the lens power required to correct your vision problems. It consists of spherical power, cylindrical power, cylinder axis, bifocal addition, and prism power. Your prescription will contain only those numbers that are pertinent for your vision correction, for example if you do not have astigmatism, you would not have a cylindrical power and axis information in your prescription. Most prescriptions do not contain prism power.Light rays passing through the optical center (OC) of a lens are not refracted.

What is the difference between plastic (CR-39) and polycarbonate?
The "standard plastic" lenses are often called "Hard Resin", "CR-39 plastic", or just quot;plastic" lenses. CR-39 is actually a PPG Industries registered trade name for a DADC (diallyl diglycol carbonate) polymer that was introduced in 1941. The "CR" stands for Columbia Resin and CR-39 was the 39th batch or formula made by Columbia Laboratories in Ohio.Light rays passing through the optical center (OC) of a lens are not refracted. With proper PD measurements, your eyes are centered at the optical center of the lens. For taking your unique fitting measurements, your physical presence is absolutely necessary. We will need to pre-adjust the frame on your face before ordering your glasses.Frames are identified by manufacturer / designer, model number or name, size, and color information. Size information contains the horizontal measurement of each lens in millimeters (i.e. 47) and bridge size (the distance between the lenses) i.e. 18.

What do the numbers on the frames mean?
Frames are identified by manufacturer / designer, model number or name, size, and color information. Size information contains the horizontal measurement of each lens in millimeters (i.e. 47) and bridge size (the distance between the lenses) i.e. 18. This information can help you in sizing a frame for your face. To better understand the frame size, double the first number and add the second. This will give you the distance across the full front of the frame.This is the main part of your prescription. This number denotes the strength of the lens as measured in diopters. - 15478

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