How to read and enter prescription
How to understand your prescription and enter your prescription on our webpage?
An eyeglass prescription is a written order by an optometrist, ophthalmologist, orthoptist for eyeglasses. It specifies the refractive power to which the eyeglasses are to be made in order correct blurred vision due to refractive errors, including myopia, hyperopia, astigmatism, and presbyopia. Eyeglass prescription issued by different doctors may differ in format, but they somewhat look like the following 4 samples. You may choose the sample which is close to yours in hand and read the notes after each sample.
Explaination:
- 1. SRX= Spectacle Prescription, the prescription for your eyeglasses.
- 2. SPH= Sphere=Spherical, is the strength of your prescription, bears sign “+” or “-”, “+”refers to farsightedness and presbyopia, “-”refers to nearsightedness. If "PL" or "Plano" is stated at the place of SPH on your prescription, please enter 0.00 for this option.
- 3. CYL= Cylinder= Cylindrical, i is the diopters degree of the astigmatism. This number also has “+” or “-” signs. If "DS" or "SPH" or "spherical" or “PL” is stated at the place of CYL, it means you have no astigmatism and 0.00 is the option required to choose.
- 4. AXIS, is a number between 0 and 180 degrees, and means the orientation of your astigmatism. There is no sign before this number.
- 5. ADD = Near Addition, means the power strength to be adjusted with SPH number for making single vision reading glasses, computer glasses or bifocal and progressive eyeglasses. Some wearers may find their ADD values are put under the “N.V.” on their prescription. Please enter the same ADD for OD and OS if you have only one ADD value.
- 6. O.D. = Right Eye
O.S. = Left Eye
- 7. P.D. distance = Pupillary Distance, in this sample, the PD is 62, which is the normal number for most of the adults.
- 8. Decimal points in the numbers of this prescription are missing. In this case, “-050”= “-0.50”, “-175”= “-1.75”. When entering numbers in Firmoo.com, please use the equivalent numbers with decimal points. Besides the decimal points, please enter the correct signs before numbers when applicable.
Explaination:
- SRX= Spectacle Prescription, the prescription for your eyeglasses;
- SPH= Sphere=Spherical, is the strength of your prescription, bears sign “+” or “-”, “+”refers to farsightedness and presbyopia, “-”refers to nearsightedness. If "PL" or "Plano" is stated at the place of SPH on your prescription, please enter 0.00 for this option.
- CYL= Cylinder= Cylindrical, i is the diopters degree of the astigmatism. This number also has “+” or “-” signs. If "DS" or "SPH" or "spherical" or “PL” is stated at the place of CYL, it means you have no astigmatism and 0.00 is the option required to choose.
- AXIS, is a number between 0 and 180 degrees, and means the orientation of your astigmatism. There is no sign before this number.
- ADD = Near Addition, means the power strength to be adjusted with SPH number for making single vision reading glasses, computer glasses or bifocal and progressive eyeglasses. Some wearers may find their ADD values are put under the “N.V.” on their prescription. Please enter the same ADD for OD and OS if you have only one ADD value.
- O.D. = Right Eye
O.S. = Left Eye
- P.D. distance = Pupillary Distance, in this sample, the PD is 62, which is the normal number for most of the adults.
- Decimal points in the numbers of this prescription are missing. In this case “-050”= “-0.50”, “-175”= “-1.75”. When entering numbers in Firmoo.com, please use the equivalent numbers with decimal points. Besides the decimal points, please enter the correct signs before numbers when applicable.
Explaination
- Rx= Prescription, the prescription for your eyeglasses;
- SPH= Sphere=Spherical, is the strength of your prescription, bears sign “+” or “-”, “+”refers to farsightedness and presbyopia, “-”refers to nearsightedness. If "PL" or "Plano" is stated at the place of SPH on your prescription, please enter 0.00 for this option.
- CYL= Cylinder= Cylindrical, i is the diopters degree of the astigmatism. This number also has “+” or “-” signs. If "DS" or "SPH" or "spherical" or “PL” is stated at the place of CYL, it means you have no astigmatism and 0.00 is the option required to choose.
- AXIS, is a number between 0 and 180 degrees, and means the orientation of your astigmatism. There is no sign before this number.
- ADD= Near Addition, means the power strength to be added to the “Spherical” number for making single vision reading glasses or bifocal and progressive eyeglasses. In this prescription, the “ADD” numbers are put under the “N.V.”(Near Vision). Some of the doctors may write one number with sign such as “+2.00” in the middle of the space under “N.V.”, which means your both eyes have the same ADD numbers.
- O.D. = Right Eye
O.S. = Left Eye
D.V.= Distance Vision
N.V.= Near Vision
- P.D. distance = Pupillary Distance, in this sample, the PD is written as “62/59”, which means “62” is the “ Far PD”, and “59” is the “Near PD”
- The numbers in this prescription are with decimal points, so just enter numbers with decimal and with correct signs +/- in Firmoo.com.
Explaination:
- 1. This prescription is issued in vertical format, while most the prescriptions are of horizontal ones.
- 2. This prescription use the plain English with no abbreviations from Latin.
- 3. SPH= Sphere=Spherical, is the strength of your prescription, bears sign “+” or “-”, “+”refers to farsightedness and presbyopia, “-”refers to nearsightedness. If "PL" or "Plano" is stated at the place of SPH on your prescription, please enter 0.00 for this option.
- 4. CYL= Cylinder= Cylindrical, i is the diopters degree of the astigmatism. This number also has “+” or “-” signs. If "DS" or "SPH" or "spherical" or “PL” is stated at the place of CYL, it means you have no astigmatism and 0.00 is the option required to choose.
- 5. Axis, is a number between 0 and 180 degrees, and means the orientation of your astigmatism. There is no sign before this number.
- 6. Add= Near Addition, means the power strength to be added to the Sphere number for making single vision reading glasses or bifocal and progressive eyeglasses. In this prescription, the “Add” numbers are put under the “Add” spaces. Some of the doctors may write one number with sign such as “+2.00” in the middle of the space under “Add.”, which means your both eyes have the same Add numbers.
- 7. PD= Pupillary Distance, in this sample, the PD is written as “62/59”, in which “62” is the “ Far PD”, while “59” is the “Near PD”
- 8. In writing the decimals in this prescription, all the decimals are written with the decimal points being clearly there. You can just enter all the numbers as shown on the prescription sheet in our webpage.
