Glasses axis
By Isabella Sara Novack
Reviewed by
Maria Horan FBDO
Maria holds a BSc Honours in Ophthalmic Dispensing and has over 17 years of optical experience.
Glasses axis - A component of an eyeglass prescription for astigmatism, the axis is a number between 0 and 180 degrees that specifies the orientation of the cylinder correction. It ensures that the lenses are positioned correctly to compensate for the irregular shape of the cornea, helping to provide clear vision.
Related articles
How to Read Your Eye Prescription
Understanding your eye prescription doesn’t have to be confusing. This guide explains key terms like SPH, CYL, Axis, and PD,...
View more
How Do Glasses Work?
You might wear them every day, but do you know how your glasses actually work? Wonder no more.
View more