Trifocal lens

The London Eye Hospital is now able to offer you the next generation of multifocal intraocular lenses (IOL’s) – the trifocal.Trifocal1 This implant gives patients a better chance to enjoy clear vision at all distances with maintained contrast sensitivity and lower visual disturbance.

 The older generation multifocal lenses offer clear distance and near vision, however they are least clear for intermediate vision and can result in glare and haloes especially with night driving. The trifocal implant has the advantage of offering clear intermediate as well as distance and near vision with minimal glare and haloes at night.

This lens enables patients to switch naturally between all distances. Studies have shown superior performance of the trifocal lenses for intermediate vision and overall image quality:

Visual Performance
Outstanding intermediate visual acuity
The trifocal implant significantly improves intermediate visual acuity enabling patients to feel more comfortable performing their intermediate distances activities.

monocular defocus_curve_trifocal

trifocal intermediate_visual_acuity

 

 




Visual Performance
High resolution under all light conditions
The trifocal implant produces images with high resolution for all distances under all light conditions. You will be able to switch back and forth between targets at different distances without the need to put on corrective glasses.

 

Visual Performance
The unsurpassed intermediate vision of the trifocal lens 
becomes evident when compared with the performance of older generation multifocal lenses.

intermediate vision_trifocal

 

Trifocal implants display far better intermediate visual performance, even under poor light conditions.

near trifocal intermediate trifocal near trifocal
Far Distance Intermediate Distance Near Distance
U.S. Air Force Resolution Target Test (AFT) for the trifocal lens at near, intermediate
and far distance at 3.0 mm pupil size.


Even poor light conditions have only a minimal influence on the good functional vision achieved by trifocal lenses at all distances.

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