The invention relates to amethod for determining the necessary opticalcorrection (2) of the defective vision of aneye (1). According to the invention,the focalarea (8) of a light beam (3) passing throughthe eye (1) is optimized in the region of theretina (6) of the eye (1) by means of opticalcorrection (2). The invention further relatesto an apparatus suitable for implementationof the method.