The invention relates to a method of determining and selecting a contact lens with an opthalmological device for examining the eyes, the opthalmological device comprising a keratometer and an autorefractometer as well as a data processor, whereby a refractive power of an eye and a topography of a cornea are determined, whereby refraction data describing a refraction of an eye to be examined are obtained, whereby topographic data describing the topography of the cornea of the eye are obtained, and whereby, by using the obtained refraction and topography data, contact lens data are calculated and a contact lens is selected from a database of the opthalmological device. In accordance with an apparatus embodiment of the invention, an opthalmological device for carrying out the method is also described.