0 (of lenses) having two points of focus, which help people to see things close at hand and things far away. -- bifokal
An interesting issue is the extent to which bifocal and varifocal spectacles might be a contributory factor in falls on stairs.
If falls begin shortly after the issue of bifocal spectacles, they should be abandoned and optimal correction ensured for everyday living.
The musical text is similarly bifocal.
You can go and buy bifocal spectacles in the private sector for well over £100.
If, as a consequence of not being able to get bifocal glasses there is a deterioration, then obviously bifocals ought not to have been recommended, but two pairs of glasses.
We have bifocal vision, we have carnivore-type teeth, and we have never developed the multiple stomachs that would enable us to live off grass and to chew the cud.
In a creative sense, the bifocal reward is that you are bound by neither.
The large eyes at the front of the head provide it with the bifocal vision and depth perception it needs to catch prey.
