| 摘要 |
<p>The invention relates to a method of determining a correction for distortion in eye representations of an ophthalmoscope. The method comprises the steps of constructing an optical description of a system comprising the ophthalmoscopeand a model eye 30. A ray is passed through the system onto a surface of the model eye 32. A measurement of the ray at the surface 34 of the eye is calculated. A horizontal scanning angle and a vertical scanning angle of thesystem for the ray 36 is determined. An expected measurement of the ray at the surface using the horizontal scanning angle and vertical scanning angle of the system 38 is calculated. Steps 32 to 38 are repeated for a plurality of further rays 40, and the actual measurements of the rays at the surface are compared with corresponding expected measurements of the rays at the surface to determine the correction for distortion in eye representations of the ophthalmoscope 42. Later embodiments relate to a computer readable medium and a computer program which when executed performs the method.</p> |
