Spectacle Lens Types
Spectacle lenses can mostly be catagorised in simple terms: single vision, bifocal and multi-focal lenses.
When people over 40 years of age start to need reading glasses, lenses that give good reading vision will blur the distance. The problem of taking these glasses on and off emerges and this is where bifocal and varifocal lenses help. They offer the facility to give good distance, mid distance and reading corrections all in one lens.
There are many types of designs in multi-focal lenses and varifocals in particular have gone through something of a revolution in the last few years with the introduction of personalised varifocal lenses, to better suit our busy lives.