An ophthalmoscope 10 comprises a light source 12, a first scanner 14, a first scan transfer element 16, a second scanner 18, and a second scan transfer element 20, which provide a two-dimensional scan of incident light from an apparent point source at a pupillary point of an eye 22 onto the fundus of the eye, and which descan a two-dimensional scan of return light from the fundus of the eye to provide return light from an apparent point source at the first scanner. The first scan transfer element 16 comprises a free-form element which has a shape defined to provide aberration correction of the return light from the fundus of the eye. The free-form element may be a reflective, static element having a curvature along two orthogonal axes (x, y, see figure 2), one (y) defined by an ellipse and the other (x) defined by a polynomial function. Methods of defining the shape of the free-form element are also provided.
