Trifocal
An ophthalmic lens that incorporates three lenses of different powers. The main portion is usually focused for distance (20 ft.), the center segment for about 2 ft., and the lower segment for near (40 cm, or 16 inches).
Related Links
Trifocal Lenses. All what you need to know about Trifocal
Trifocal Lenses Implant — Centre for Sight
What Are Trifocal Lenses? — Specsavers Australia
Trifocal intraocular lenses — Cataracts — Vision Eye Institute
Risk of Breaking Haptic of Trifocal IOL and Its Management
Lens Types – Eyeglasses — Single Vision, Progressive, Bifocal, Trifocal
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