[Dynamic refraction in schoolchildren].

A technique for dynamic refraction measurement in natural conditions is proposed using open-field refractometer. Dynamic refractometry was studied in 101 schoolchildren with emmetropia and different degree ametropia. Based on the data obtained accommodation input for 5, 2.5, 1, 0.5 and 0.33 m was countered. It was found that as the object becomes closer spheric power and astigmatism degree increase and axis changes. Accommodation input in patients with hyperopia was close to calculated values, in emmetropia decrease of input by mean 49% was found and in myopia--by 74% compared to calculated values.