Teacher: In this task, you will be given sentences in which your task is to recognize the name of the organ of the body. An organ is a collection of tissues that structurally form a functional unit specialized to perform a particular function. Although there might be several correct answers, you need to write one of them.
Teacher: Now, understand the problem? If you are still confused, see the following example:
I have serious allergy in my left eye.
Solution: eye
Reason: Eye is an organ which has been affected, hence should be tagged.

Now, solve this instance:  Clinical comparison of intraocular pressure ( IOP ) measured with the Goldmann applanation tonometer ( GAT ) , the ProTon tonometer ( PT ) , and the Schiotz tonometer ( ST ) , in normal eyes , eyes with scarred corneas and postkeratoplasty eyes .
Student:
eyes