Multifocal and trifocal IOLs provide functional vision at multiple distances by splitting incoming light into distinct focal points. This optical engineering is significantly more complex than monofocal lens design.
Optical engineering
Premium lenses incorporate:
- Diffractive or refractive ring structures
- Light-distribution algorithms
- Chromatic aberration control
- Enhanced intermediate vision zones
These features require sophisticated manufacturing and extensive clinical validation.
Clinical performance
Studies show higher rates of spectacle independence with trifocal lenses compared with monofocal lenses, though photic phenomena such as haloes and glare may occur, particularly in the first weeks after surgery. ¹
Why this affects cost
Premium lenses require:
- More complex manufacturing
- Larger clinical trials
- Greater surgeon planning time
- More detailed counselling
Typical UK ranges
Premium IOLs sit toward the upper end of the £3,500-£6,000 per eye range.
Who benefits
Patients prioritising spectacle independence across near, intermediate and distance tasks.
References
- de Silva SR, Evans JR, Kirthi V, et al. Multifocal versus monofocal intraocular lenses after cataract extraction. Cochrane Database Syst Rev. 2016;12:CD003169.
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