Ophthalmology General 669f78cf

The Most convenient form of a cross cylinder is a combination of –

–0.5 Diopter sphere with +1 Diopter Cylinder

+0.5 Diopter sphere with –1 Diopter Cylinder

+0.25 Diopter sphere with –0.5 Diopter Cylinder

–0.25 Diopter sphere with +0.5 Diopter Cylinder

High-Yield Explanation

The most convenient form is a combination of a -0.5D sphere with a + 1.0D cylinder which has an effective strength of + 0.5D cylinder in one meridian and -0.5D in other.

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The Most convenient form of a cross cylinder is a combination of –

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