发明名称 |
MEASUREMENT OF DISTRIBUTION OF MACULAR PIGMENT. |
摘要 |
Apparatus for use in measuring the density and spatial distribution of macular pigment in an eye comprises a camera (4) for capturing a colour image of an eye, at least one filter (36) for filtering light reaching the camera (preferably by filtering the light illuminating the eye). The filter (36) has a transmission spectrum with one peak in the region of light absorbed by the pigment and another peak in a region where no such absorption occurs. The filter increases the sensitivity of the camera to macular pigment whilst enabling the effect of other pigments to be reduced or eliminated. A method of measuring macular pigment involves obtaining a colour image of an eye, the image having two colour components each having a spectrum having a respective one of said peaks. Corresponding portions of the components are mathematically combined so as to provide a measurement of macular pigment density and the results of the combination are used to provide an output representative of the contribution of macular pigment to the image.
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申请公布号 |
MXPA05011701(A) |
申请公布日期 |
2006.01.23 |
申请号 |
MX2005PA11701 |
申请日期 |
2004.04.27 |
申请人 |
MILLENNIUM DIET AND NUTRICEUTICALS LIMITED |
发明人 |
JOHN THOMAS LANDRUM |
分类号 |
A61B3/12;(IPC1-7):A61B3/12 |
主分类号 |
A61B3/12 |
代理机构 |
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主权项 |
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地址 |
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