THE EFFECT OF CYCLOPLEGIA ON MEASUREMENT OF THE OCULAR COMPONENTS

Purpose. The purpose of this study was to examine the effect of cyclop legic agent on the measurement of refractive error and the ocular comp onents. Methods. We compared two commonly used topical cycloplegic age nts, 1% tropicamide and 1% cyclopentolate, for their effect on the mea surement of refractive error (by Canon R-1 autorefraction), accommodat ive response (by Canon R-1 autorefraction and by the conventional, sub jective ''pushup'' method), crystalline lens power (by video phakometr y and by calculation), and axial ocular dimensions (by A-scan ultrason ography) in 20 emmetropic to moderately hyperopic children.