The SPH number on a glasses prescription is listed as a positive or negative - number. CYL - short for cylinder - which indicates the strength of your astigmatism if you have one.
How To Read My Prescription Glassesshop Com
AXIS - the rotation of the cylindrical lens CYL that runs on a plane of 1-180 degrees.
My glasses prescription says sph under cylinder. The sphere part is a different part of the prescription. In the OS cylinder column means that you have no astigmatism in your left eye. Sphere SPH and Cylinder CYL always have a or - sign.
SPH Sphere SPH is a or - value in 025 steps and is required to correct your nearsightedness - or farsightedness. However if prescription is higher than. SPH in the OS cylinder column means sphere power.
If it has a plus sign you are farsighted. When you enter your prescription during checkout please select Not Applicable. Like sphere power the cylinder power is also measured in diopters What is an axis.
Eg 62 Single PD 3331 Dual. I have SPHERESPH SDS under CYL on my prescription If the optometrist wrote DS. For all Cylinder and Axis fields thank you.
The top number is the prescription for the right eye and the bottom number is the prescription for the left eye. That is why there is nothing filled out in the axis column. If your prescription only shows the.
Sphere Cylinder and Axis on Eye Prescriptions. A negative number means that the lens is correcting for nearsightedness while a positive number indicates a prescription for farsightedness. This indicates the amount of lens power measured in diopters D prescribed to correct nearsightedness or farsightedness.
That is why there is nothing filled out in the axis column. The vertical meridian of your eye is the 90-degree meridian while the. Appearing under Cylinder on my prescription mean.
Cylinder power will always come after sphere power in a glasses prescription. DS simply means no power is present in the CYL box so leave this as NONE or DS. My idea is to go back to this doctor and try on the both versions both with 100 cylinder and only then make the glasses.
Your eyeglass prescription contains other terms and abbreviations as well. In some cases the optician may write what appears to be a slash above the. The higher the SPH number the stronger your prescription is explains the American Academy of Ophthalmology AAO.
If there is no value under the cylinder heading then you have a simple prescription. Essentially this means correction for Astigmatism is not required for the prescription being considered. 21122007 For the best answers search on this site httpsshorturlimavKJd It means you only need sph power No you dont have a cyl or axis.
You should adjust it only after you put the 100 cylinder and see which gives you the best vision. If there are no numbers for CYL AXIS or ADD in your prescription do not enter anything in these fields when ordering. On any prescription PD can be written in different ways.
Your prescription may be written out on a blank Rx pad instead of a pre-made Rx pad for eyeglasses only. It indicates the strength of your prescription in diopter. DS Dioptres Sphere means you only have a Sphere power.
In the Cylinder space it indicates no correction and should be entered as 0 on the order form. The cylinder CYL number indicates the lens power needed to correct. SPH - short for sphere - the main part of your prescription.
When only one number appears for each. What The Values On Your Prescription Mean. When reading your glasses prescription you will find values under the headings of SPH CYL AXIS and sometimes PRISM.
This means that the eyeball is spherical and has no oblongedness and consequently has no Cylinder or Axis values. If there is a value under this heading then you have astigmatism. A minus - symbol next to this number means youre nearsighted and a plus symbol means the prescription is meant to correct farsightedness.
175 or 200 is a question of comfort and clear vision. If you have astigmatism in the particular eye thus the cylinder and the axis columns would be filled out. The meridians of your eye are identified using a protractor scale against the front surface of the eye.
If the number appearing under this heading has a minus sign you are nearsighted. The sphere SPH on your prescription indicates the lens power you need to see clearly. Your optician may or may not write DS Dioptres Sphere in the CYL box.
Cylinder it stands for you have no astigmatic correction in the particular eye. If there is a signs of SPH.
How To Read Glasses Prescription Eye Prescription Explained Glasses Direct 2 Pairs From 16 As Seen On Tv
Prescriptions Should Contain Sph Pwr Cyl Ax Add And Pd The Definitions Of Which Can Be Found Bel Prescription Prescription Eyeglasses Buy Contact Lenses
How To Read My Prescription Glassesshop Com
