| 摘要 |
An method for detection of beta-amyloid in aqueous humor, lens, and retina of eye or the deposit of the combination of alphabeta-crystallin and beta-amyloid in lens is provided. A light is emitted to a testing area in the eye. The light frequency is selected according to an absorption spectrum of the test substance, and the frequency is equal or close to a resonant excitation frequency of one of the electronic molecular energy levels of the substance, so as to excite the substance to generate resonance-enhanced Raman effect or pre-resonance Raman effect to form a detection spectrum. The concentration of the substance could be estimated by a peak intensity of the detection spectrum.
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