What you see: There's a whitish-colored ring along the outer edge of your cornea.(現象：你的角膜的外緣有一個白圈。)

Gray isn't just for hair. Some people develop a gray ring around the edge of the cornea.(不只是頭發會變成灰色，有些人眼角膜的邊緣也會變成灰色。)

Each cluster includes a pair of eyes with a sophisticated lens, retina, iris and cornea. Scientists aren't sure how they process what they see.(每組包括一對擁有復雜晶狀體、視網膜、虹膜和角膜的眼睛。科學家們還不確定它們如何處理它們看到的東西。)

A corneal ulcer can be seen as a white or gray round spot on the cornea that is visible with the naked eye.(裸眼就可觀察到角膜潰瘍為位于角膜上的白色或灰色圓形病灶。)

Stromal haze with opacification of the cornea is a common finding (shown).(角膜基質渾濁且透明性喪失是一項常見體征(如圖所示)。)

Among the organs most commonly transplanted are the heart, kidneys, lungs, livers, pancreas, small bowel and cornea.(在所有器官中，最常受到移植的是心臟、腎臟、肺、肝臟、胰腺臟、小腸和角膜。)

LASIK is performed using a laser programmed to remove a defined amount of tissue from your cornea.(LASIK眼科手術是用激光程序從你的角膜移除預定數量的組織。)

This clouding can be caused by an inflammation under the flap of cornea tissue.(這種渾濁是由角膜瓣下角膜組織的炎癥反應所造成的。)

Infection of the cornea (keratitis).(角膜感染(角膜炎)。)

We produce tears in response to insults to the eyes—the sting of onion fumes, a tiny insect that flew into your cornea.(當眼里受到攻擊時，我們以淚水應對，比如洋蔥氣味的侵襲，小蟲飛進了眼睛。)