Does my prescription show astigmatism?

Axis – The third number indicates the direction of your astigmatism. For example, an axis of 180 degrees means the astigmatism is horizontal. If your prescription doesn’t have a second or third number, you most likely don’t have astigmatism.

Can you have an axis without a cylinder?

If your prescription has the word Plano, PI, or an infinity sign, it means that you do not have distance problems. You may, however, have astigmatism. Most values will be 0.00 to +/-20.00. Axis is the lens meridian that has no cylinder power to correct astigmatism.

Does the cylinder and axis change over time for eyeglasses?

If you compare your current prescription to an older one you may notice that your AXIS and CYL measurements have changed slightly. This is not uncommon, as eyesight can undergo several changes throughout one person’s lifetime.

Are both Axis and cylinder the same eye?

The number marked ‘axis’ describes the orientation of astigmatism. It will be a number between 1 and 180. The number under ‘cylinder’ provides the lens power needed to correct the astigmatism.

What does horizontal astigmatism mean?

However, if your horizontal meridian is affected (known as indirect astigmatism), your eyes won’t be able to focus on horizontal lines, again resulting in blurred vision.

What is my axis if I don’t have astigmatism?

If the axis is 180 degrees, you may see it noted as x180. Those with a “normal” eye axis will not see these values in their eyeglass prescriptions. This is because these people do not have astigmatism. People with a normal eye axis have strong and clear vision.

What is my CYL if I don’t have astigmatism?

Sphere, Cylinder, and Axis on Eye Prescriptions Cylinder: The cylinder (CYL) number indicates the lens power needed to correct astigmatism. If this column is blank, it means you don’t have an astigmatism.

What do the cylinder and Axis numbers mean on glasses?

The Cylinder and Axis numbers are for astigmatism. Perfect eyes have round corneas; an eye with astigmatism has a cornea shaped like a spoon or the side of a football. The eyeglass lens can correct for this refractive error if it also has a shape more complicated than just convex or concave.

What is astigmatism and why axis matters?

Astigmatism and Why Axis Matters. It refers to how much the glasses lenses should be convex or concave. The Cylinder and Axis numbers are for astigmatism. Perfect eyes have round corneas; an eye with astigmatism has a cornea shaped like a spoon or the side of a football. The eyeglass lens can correct for this refractive error if it also has…

What is the “Axis” on my Prescription for my right eye?

The “axis” on my glasses prescription for my right eye is close to 45 degrees, and according to my eye doctor, this is the worst possibility. But I’m happy to know this is just a refractive error that can be corrected with glasses or laser surgery.

What is the correct cylinder power for astigmatism in left eye?

The left eye (OS) is being prescribed -1.00 D sphere for myopia plus -0.50 D cylinder for the correction of astigmatism. The cyl power has its axis at the 180 meridian, meaning the horizontal (180-degree) meridian of the eye has no added power for astigmatism and the vertical (90-degree) meridian gets the added -0.50 D.