Monofocal Toric EDOF and Multifocal Cataract Lenses

Monofocal lenses

A monofocal intraocular lens has one main focal point. It is often set for clear distance vision, although a near or intermediate target is possible. Patients usually need glasses for other distances. A monofocal plan is often appealing when image quality and predictability are high priorities.

Toric lenses

A toric lens is designed to reduce regular corneal astigmatism. Toric describes astigmatism correction, not the full range of vision: some toric lenses are monofocal and others incorporate additional optical designs. The corneal measurements need to be reliable, and some irregular corneas are poor candidates.

Extended depth of focus lenses

An extended depth of focus, or EDOF, design aims to widen the useful focus, often to help with intermediate tasks such as computer work. Depending on the lens and the patient, close reading glasses may still be needed. Some patients notice halos or changes in contrast, particularly in low light.

Multifocal lenses

Multifocal designs distribute light to support more than one distance and may reduce the use of glasses. They can also create halos, glare or reduced contrast, and their performance may be less satisfactory when the cornea, retina or optic nerve has significant disease. The tradeoff varies by lens design and by patient.

There is no universal best lens

An examination, measurements and your willingness to use glasses are more useful than choosing a lens from a label. Ask what you are likely to gain at the distances you use most, what you may give up in night vision or contrast, and what additional costs or visits apply.