how to read a glasses prescription

This represents the angle in degrees between the astigmatic eyes two meridians. It does not contain certain information that is crucial to a contact lens prescription and that can be obtained only during a contact lens consultation and fitting.

How To Read Glasses Prescription Vision Rx Eyebuydirect Prescription Eyebuydirect Prescription Glasses

90 denotes the vertical meridian and 180 denotes the horizontal meridian.

. You should also look for the Add row if you. Most prescriptions are written from left to right but you may also see a vertical prescription which is written from top to bottom. So for the right eye the correct number is -025 -050 x 180. 1 The eye size number it is the size of the lenses on your frame.

Sometimes these will have a helpful label to convey their meaning but if not heres what you need to know. This data indicates the length of your glasses which could include bridge width lens diameter and side length. How to Read a Glasses Prescription OS and OD Some of the first things you may notice when you view your eyeglasses prescription are the headings OS and OD. If the numbers are marked with a minus sign - youre nearsighted.

The second number is. On any prescription PD can be written in different ways. A minus - symbol next to this number means youre nearsighted and a plus symbol means the. Progressive Bifocal For multi-focal glasses as well as reading and computer glasses your Rx will include an ADD or NV value.

Most of the time OD and OS are indicated on the left of your prescription and the following numbers show each eyes specific needs. In the above example this would be -200 and 175 with the result -025. This is short for oculus sinister and is your left eye Sphere SPH The sphere column is often abbreviated as SPH. Some glasses prescriptions also include additional numbers such as.

All are in the measurement of millimeters. BD Operating system 100 050 x 180 200 add 05 pd. 2 The bridge size number the distance between the lenses. Measured in prismatic diopter pd.

Our affordable prescription glasses are a fraction of most of the prices youll pay at your local optometrist and still boast stellar durability craftsmanship and comfort in a variety of styles. For instance lets say that you have an eyeglass prescription that has a sphere power of -125 a cylinder of -100 an axis of 83 and an add of 150. Eye doctors write prescriptions this. The information for your right eye OD always comes before the information for your left eye OS.

How to read glasses prescription on frames. There is a separate prescription for your right eye and your left eye. Although the physical prescription may look a bit different generally it will have all the items necessary to produce you a pair of glasses with your prescribed prescription. Oculus dexter and oculus sinister which are abbreviations in Latin for right eye OD and left eye OS.

Sphere Cylinder and Axis on Eye Prescriptions Sphere. Each section is lettered to help you. 3 The temple length number it is the size of that part of your eyeglass frame which rests upon your ears. OS is an abbreviation of oculus sinister which is Latin for left eye.

If youre near-sighted or far-sighted check the SPH column to find out how strong your lenses need to be. It is indicated as. To find the right reading glasses add the sphere number to the ADD number. Let us read all three in detail.

Sometimes appearing as OD. Additionally read the CYL column to find the strength of lens you need to correct astigmatism. Essentially the formula for converting an eyeglass prescription to reading glasses is adding your sphere power to your add power. Thats why weve put together a short guide to help you learn how to read a glasses prescription so you can get to ordering your new set of eyeglasses as quickly as possible.

Right and Left Eye In a typical prescription like the one above youll find these abbreviations on the left side. To read an eyeglass prescription look for the labels OD and OS which stand for right eye and left eye respectively. When you look inside your glasses you will see a number written like 52 18 135. A glasses prescription is not a contact lens prescription.

Eg 62 Single PD 3331 Dual PD or 6260 Distance PDNear PD. For the left eye add 100 and 175 to get the result 275. Spectacle and contact lens prescriptions arent the same. The first number in a prescription is the spherical correction often abbreviated as SPH.

These abbreviated terms are common on prescriptions for glasses contact lenses and eye medicines but some doctors and clinics have opted to modernize their eye prescriptions by using RE right eye and LE left eye instead of OD and OS. This is short for oculus dexter and is your right eye OS. This is the lens power needed to fix your vision. If you complete an eye exam and find your eyes needs have changed you need to order a new prescription as soon as possible.

BU For this situation the eye specialist has recommended 200 D circle to remedy myopia in the right eye OD. The cylinder measurement comes next followed by the axis measurement. There is no astigmatism rectification for this eye so no chamber force or hub is noted. It is required when eye alignment needs assistance.

A spectacle prescription is for the purchase of spectacles only. It is usually denoted by a number that ranges between 1-180. Thats where your new prescription from your optometrist or. To illustrate this process it is helpful to provide some examples.

Bridge Width is the division above the nose between the lens. OD right eye and OS left eye The key to reading your eyeglasses prescription whether you have nearsightedness farsightedness astigmatism or anything else is knowing what OD and OS stand for. This is a measure in dioptres of how powerful the lens needs to be to correct either nearsightedness noted with a - or farsightedness noted with a. The Axis value indicates if your prescription includes cylindrical power.

Some of the numbers in your prescription tell the eyeglass manufacturer how much correction your vision needs. Below I will share an eyeglass prescription. Blank Format The information on this free-form prescription is usually handwritten. The sphere SPH on your prescription indicates the lens power you need to see clearly.

Above is a sample eyeglass prescription. OD 200 SPH 200 add 05 pd. Lets dig into how to read your Spectacle Prescription and what everything on it means. Youll be able to identify if your prescription is for a bifocal or progressive lens if it contains an add which stands for lens addition.

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