Abstract: A blood vessel senescence detection system characterized in that a means for detecting volume pulse waves of paired eyeground artery and vein traveling in the same direction, and a means for detecting peripheral vascular resistance by using waveform differences between the both pulse waves is provided. According to the detection system, the degree of senescence of the capillary of the body, and furthermore the degree of the whole cardiovascular system of the body, can be detected, for example, as a rate of change with time or a vascular age, by using the waveform difference between the volume pulse wave of the eyeground artery and the volume pulse wave of the eyeground vein as a parameter.

Abstract: Provided is a pulse wave propagation detection system including an electrocardiographic signal detection unit, and an eyeground image detection unit for detecting an eyeground image in synchronization with an electrocardiographic signal detected through the detection unit, which system further includes a correlation unit for correlating a change in the diameter of an eyeground vein—which diameter is measured, at the optic papilla, by use of an eyeground image synchronized with an arbitrary electrocardiographic signal—with the state of pulse wave propagation through an intracerebral blood vessel or with the state of sclerosis of a capillary artery.

Abstract: Provided is a pulse wave propagation detection system including electrocardiographic signal detection means, and eyeground image detection means for detecting an eyeground image in synchronization with an electrocardiographic signal detected through the detection means, which system further includes means for correlating a change in the diameter of an eyeground vein—which diameter is measured, at the optic papilla, by use of an eyeground image synchronized with an arbitrary electrocardiographic signal—with the state of pulse wave propagation through an intracerebral blood vessel or with the state of sclerosis of a capillary artery. Provision of the pulse wave propagation detection system; i.e., means for conveniently and accurately identifying the state of blood flow in the brain or the state of sclerosis of a capillary artery, enables prevention of adverse effects of, for example, excessive drop in blood pressure.

Abstract: An arteriosclerosis detection system including an electrocardiographic signal detection device, an eyeground image detection device for detecting an eyeground image in synchronization with an electrocardiographic signal detected by the detection device. The arteriosclerosis detection system further includes an eyeground vein constriction detection device for detecting the constriction of an eyeground vein in the vicinity of a site at which the eyeground vein and an eyeground artery cross each other. The constriction is detected based on the detected eyeground image in synchronization with the electrocardiographic signal. The arteriosclerosis detection system detects the eyeground image by executing an algorithm of software, which provides an eyeground image synchronized with an electrocardiographic signal by obtaining a stationary eyeground image synchronized with an arbitrary electrocardiographic signal from an animated eyeground image.

Abstract: The invention is drawn to detect arteriosclerosis by convenient and sensitive means. The present inventors have found that such means can be obtained by use of an arteriosclerosis detection system including electrocardiographic signal detection means, eyeground image detection means for detecting an eyeground image in synchronization with an electrocardiographic signal detected by the detection means, and eyeground vein constriction detection means for detecting the constriction of an eyeground vein in the vicinity of a site at which the eyeground vein and an eyeground artery cross each other, on the basis of the eyeground image detected in synchronization with the electrocardiographic signal.