| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inspection system for evaluating the quantity of tear secretion easily and non-invasively in an inspection system of tear secretion quantity, useful for the evaluation of the dry eye. <P>SOLUTION: The inspection system of tear secretion quantity comprises a moisture evaporation quantity detector 10 for detecting the quantity of moisture evaporation from the eyes of a subject by a humidity sensor 13 and an operation means 20 for calculating the parameter for evaluating the quantity of tear secretion based on the detection signal of the humidity sensor 13. In the profile of the evaporation of tear in which values f(t) detected by the humidity sensor 13 are plotted to the time t, the operation means 20 approximates the attenuated part of a serrated form of response to appear in every blink with the exponential expressed in the following expression: f(t)=Ae<SP>-kt</SP>+B (in the expression, A is an initial change value, k is the attenuation factor, and A, k and B are a constant respectively), and calculates the initial change value A and the attenuation factor k to make them the parameter for evaluating the quantity of tear secretion. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
