最近,小军无意中发现70多岁的父亲黑眼球边缘有一圈灰白色的东西。问父亲有没有感觉,父亲说不痛也不痒,视力也没有什么明显变化。但小军还是不放心,带父亲到医院检查。医生说,有些老年人眼球角膜边缘出现一圈灰白色的环状痕迹,好似“包绕黑眼珠的环”,不痛不痒,也无其他异常感 Recently, a small army inadvertently found 70-year-old father had a circle of gray-white edge of the black eye. Asked my father did not feel, my father said no pain or itch, no significant change in visual acuity. However, the army is still not assured, with his father to the hospital for examination. The doctor said that some elderly people with corneal edge of a circle of white ring marks, like “wrap around the black eye of the ring,” itching, no other abnormalities