What is astigmatism?
Astigmatism is an eyesight problem mainly caused by "incorrect curvature of the cornea", i.e. the cornea is slightly oval in shape instead of being spherical.
Astigmatism is described in terms of :
- module (difference in curvatures)
- axis (orientation of curvatures)
Astigmatics have imprecise near and far vision their peripheral vision is unclear and they cannot clearly distinguish certain shapes and details or see contrasts clearly between horizontal, vertical or oblique lines.
Astigmatism may be combined with other eyesight problems such as myopia, hypermetropia or presbyopia.
Astigmatism is very common among young children and can have a negative impact on academic success since it causes confusion between letters and numbers.
Correcting astigmatism
Astigmatism is corrected by means of a toric lens (curved and of varying thickness at the edges). This lens is designed to compensate the defect of the cornea and correct the axis of the astigmatism. The difference in thickness at the edge of the lens is therefore greater the stronger the astigmatism.
Solutions for your astigmatism
Recent advances mean we can offer you very light, increasingly flat lenses. Gone are the days of thick and heavy lenses - you will wear your glasses with pleasure and comfort.
For mild and moderate astigmatisms:
For high astigmatisms:
Regain confidence and comfort with Essilor Lineis® lenses.
Are you astigmatic and presbyopic?
The best solution for your eyes is Varilux® progressive lenses from Essilor. They correct your astigmatism and allow you to enjoy all activities by giving you perfect eyesight at all distances, near and far.
Find out more about Essilor lenses