Understanding astigmatism
Astigmatism means the eye focuses light differently in different directions. It can cause blur or ghosting at near, intermediate and far distances. A cataract and astigmatism can both contribute to blurred vision.
What is a toric lens?
A toric intraocular lens is an implant with correction built in for regular corneal astigmatism. Mr Rabie uses your measurements to select the lens and align it to the planned angle during surgery.
Choose your focus, then consider toric correction
Toric correction can be added to monofocal, enhanced monofocal, extended depth of focus or multifocal designs where a suitable lens is available. A distance-focused monofocal lens generally still requires glasses for intermediate tasks and reading. An enhanced monofocal may give some additional intermediate range, and reading glasses will still be needed.
Measurements and suitability
Biometry and corneal mapping help determine the power, pattern and angle of correction. Tell the team about dry eye, contact lenses and previous eye surgery. Irregular astigmatism needs individual assessment.
What to expect
Toric correction can reduce the remaining astigmatism prescription, but glasses may still give the clearest vision. The lens can rotate and occasionally needs repositioning. Another option is a non-toric lens with glasses to correct any remaining astigmatism. Mr Rabie will explain the expected benefit and alternatives for your eyes.