Surgical correction of astigmatism during cataract surgery.
High levels of corneal astigmatism are prevalent in a significant proportion of the population. During cataract surgery pre-existing astigmatism can be corrected using single or paired incisions on the steep axis of the cornea, using relaxing incisions or with the use of a toric intraocular lens. This review provides an overview of the conventional methods of astigmatic correction during cataract surgery and in particular, discusses the various types of toric lenses presently available and the techniques used in determining the correct axis for the placement of such lenses. Furthermore, the potential causes of rotation in toric lenses are identified, along with techniques for assessing and quantifying the amount of rotation and subsequent management options for addressing post-operative rotation.
Buckhurst
Phillip J
PJ
Aston University, Life and Health Sciences, Ophthalmic Research Group, Birmingham, United Kingdom.
Wolffsohn
James S
JS
Davies
Leon N
LN
Naroo
Shehzad A
SA
D001251:Astigmatism / Q000601:surgery*; D002387:Cataract Extraction; D016039:Corneal Transplantation; D003941:Diagnostic Techniques, Ophthalmological; D004867:Equipment Design; D006282:Health Personnel / Q000523:psychology; D006801:Humans; D007640:Keratoconus / Q000601:surgery; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D013508:Ophthalmologic Surgical Procedures; D009907:Optometry / Q000379:methods; D017755:Prosthesis Fitting / Q000379:methods; D012380:Role; D012399:Rotation