FIELD: medicine.
SUBSTANCE: method involves carrying out keratotopographic examination. Peripheral cornea curvature radius Rp is measured within 1 mm wide ring-shaped zone and distance h from optical cornea center to the peripheral ring. Central curvature radius is calculated as 
where e is the cornea eccentricity equal to 0.5.
EFFECT: simplified method; high accuracy in determining initial value.
2 cl, 2 dwg
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