Astigmatism is often found in combination with shortsightedness and farsightedness and contributes to blurry vision. This occurs because the cornea is shaped like a rugby ball rather than a soccer ball. Depending on how light rays enter the cornea, they may be focussed to different points – see the diagram below.
Options for Correction of Astigmatism
There are many options available for permanent correction of astigmatism and these include:
- Laser eye surgery
- Laser astigmatic keratotomy
- Laser Limbal relaxing incisions
- Toric Implantable Contact Lenses
- Toric Intraocular Lenses
Authored by Sheraz Daya MD FACP FACS FRCS(Ed) FRCOphth, Consultant Ophthalmic Surgeon & Medical Director, June 2019.
Next review due June 2020.