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.
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.
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