It is important to note thatan eyeglass prescription is different than a contact lens prescription. Eyeglass lenses are positioned at a distance from the eyes, while contact lenses rest directly on the eye’s cornea. That difference affects the lens power, among other things, required for your ...
In addition to the information in an eyeglass prescription, a contact lens prescription must specify the base (central) curve of the back surface of the contact lens, the lens diameter, and the specific manufacturer and brand name of the lens. Also, the power of an eyeglass prescription freque...
The number in the cylinder column may be preceded with a minus sign (for the correction of nearsighted astigmatism) or a plus sign (for farsighted astigmatism). Cylinder power is always written after sphere power in an eyeglass prescription. Add Add isthe added magnifying power applied to the...
How should you interpret each of the eye prescription items’ meanings? To learn more about each term, refer to the glossary below, where you will find each of the abbreviations and numbers of the glasses prescription explained. Eyeglass prescription numbers Generally speaking, your prescription ...
How to Replace Eyeglass Earpieces How to Remove the Side Shields of Prescription Safety Glasses How to Replace the Grip on a Graphite Golf Shaft Earpieces on eyeglasses are the ends of the temple piece/support arms that rest on top of and/or behind the ears. The term “earpiece” can ...
A prescription for contact lenses and one for glasses are not the same. The difference between an eyeglass prescription and a contact lens prescription is how close the lens is to your eyes. Glasses are worn a few millimeters from your eyes (maybe 12-14mm) and contacts are, of course, wor...
Lighter, thinner frames will generally sit more comfortably and allow a closer fit. Large, heavy frames may need to be sized looser than usual. Frame Materials There are dozens of different chemicals and alloys used to make eyeglass frames. Plastics and nylon-based composites are usually used fo...
Eyeglass repair kits such as our Feel Good Handy Kit are perfect for tightening screws on your glasses. If you find your glasses very quickly becoming loose again, you may need to replace the screws. See below for more tips on how to tighten glasses. Make minor adjustments Avoid making ...
How to Read Your Eyeglass Prescription When you look at your prescription for eyeglasses, you will see numbers listed under the headings of OS and OD. They are Latin abbreviations: OS (oculus sinister) means the left eye and OD (oculus dexter) means the right eye. Occasionally, you will ...