临床医学研究表明,心脏在发生病理改变时常通过体表反映出来,有的体表征象虽不甚明显,但仔细观察不难发现蛛丝马迹。角膜老年环一些老年人的眼球角膜靠近巩膜的边缘部分有一圈灰白色或白色的混浊环,宽约1～2 Clinical studies have shown that the heart often pathological changes reflected through the body surface, and some body surface signs, although not obvious, but careful observation is not difficult to find clues. Corneal geriatric ring Some elderly eye cornea near the edge of the sclera has a ring of white or white turbid ring width of about 1 to 2