CYL– Cylinder, this will only appear on your prescription if you have an astigmatism, and is written in 0.25 increments. It is possible that this will only apply to one eye. If you don’t have an astigmatism, your doctor may leave this field blank, or they may choose to put ‘00’,...
④ If the sum of your SPH and CYL numbers is greater than 800 degrees, a lens of 1.74 is generally chosen. 3. How to choose lens functions? ① Photo Brown/Photo Grey: Lenses do not have anti blue light function, but have anti reflection function. Lenses will darken in sunlight, turnin...
For custom prescription glasses, we need to know the following datas. OD-Right Degree : OS-Left Degree : PD-Pupillary Distance : If you have Cylinder, we need to know the following datas. OD-Right Cylinder (CYL) : Axis: OS-Left Cylinder (CYL) : Axis: ...
The Federal Trade Commission (FTC) is the U.S. government's consumer protection agency. TheirPrescription Release Rulerequires that eye doctors give patients a copy of their eyeglass prescription at the end of aneye examthat includes arefraction. The Prescription Release Rule is intended to allow ...
I recently had my annual eye exam and have Sphere (I guess diopter correction?) of -5.50 in both eyes. Plus astigmatism now that I look at the prescription more carefully reading up on what the numbers actually mean -- Cyl/Axis of +1.0/010 in my right eye and +1.25/170 in the left...
Cylinder (CYL) Cylinder indicates the amount of lens power needed forastigmatism. It always follows the sphere power on an eyeglass prescription. The number in the cylinder column may have a minus sign (for correction of nearsighted astigmatism) or a plus sign (for farsighted astigmatism). ...
SPH on your prescription, please enter 0.00 for this option. 3.Cylinder (CYL) = Cylindrical, 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 astigmatis...
SPH on your prescription, please enter 0.00 for this option. 3.Cylinder (CYL) = Cylindrical, 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 asti...