It’s important to know that an eyeglass prescription is not the same as a contact lens prescription.Eyeglasses sit a short distance from your eyes, while contact lenses rest directly on your cornea. Because of this, contact lens prescriptions must also include: Lens base curve Diameter Brand ...
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 for vision correction will be represented as a positive or negative number, ...
To help you determine what all this means, here are common eye prescription abbreviations and what they mean: OS (Oculus Sinister): Refers to your right eye. OD (Oculus Dextrus): Refers to your left eye. OU (Oculus Uterque): Refers to both your eyes. D (Diopter): This is represented...
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...
How to choose glasses according to your face type? Show more How to measure the pupillary distance (PD) at home in 5 simple steps Show more What if new glasses don’t fit? Use hairdryer, fingers and wear them 1 week. Show more Eyeglass prescription: How to read it? Show ...
How to adjust your glasses at home In just a few simple steps, you can adjust your pair of crooked glasses to stay functional, as well as ensuring they feel the most comfortable. Deciding on what adjustments to make Before you adjust your wonky glasses, you need to determine what the prob...
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...
If the answer is yes, the doctor will also determine the best type and size of contacts for you. If you already wear contacts, a contact lens exam lets your eye doctor see if updates or changes to your prescription are needed—or if something is amiss and needs attention. Contact Lens ...
Your eye doctor will use the results of your refraction to determine your eyeglasses prescription. A refraction, however, does not provide sufficient information to write a contact lens prescription, which requires a contact lens fitting. Eyeglass lenses and contact lenses are fabricated with precise...
Learning how to buy eyeglasses for your face shape isn't just about shape, but getting the right size for your face as well. If you've looked closely at the packaging (or sometimes the frame itself), eyeglass frames use three numbers to size. They represent the lens size, the bridge...