The eye itself has a refractive power of 60 diopters.

The first lens has positive refractive power, the second negative.

Anisometropia is the condition in which one eye has a different refractive power than the other eye.

Briefly, the total refractive power of the emmetropic eye is approximately 60.

The individual's refractive power is then read off a linear dioptre scale.

It has the highest refractive power of any mineral.

There was not even any evidence of refractive power as judged by the aspect of the landscape ahead.

As a consequence, there are two different refractive powers at orientations perpendicular to each other.

At the same time he changed this value of refractive power into a single number, instead of the traditional ratio of two numbers.

This causes the lens to form a more spherical shape achieving a higher level of refractive power.