[Determination of the real size of an object on the fundus of the living eye].
A method is described which allows the real diameter of an object on the fundus to be determined by means of a system of curves which are the result of trigonometrical calculations and which give an approximate value; only a photograph of the fundus, a measurement of the ametropia and of the radius of the anterior surface of the cornea are required. The results can be corrected with a second graph, which makes use of the length of the optical axis of the eye.
D003315:Cornea / Q000033:anatomy & histology; D005654:Fundus Oculi; D006801:Humans; D055095:Optics and Photonics; D010781:Photography; D012030:Refractive Errors / Q000503:physiopathology*; D012858:Size Perception / Q000502:physiology*
Zur Bestimmung der wahren Grösse eines Objektes auf dem Hintergrund des lebenden Auges.