‘I am weary with my groaning.
Every night I make my bed swim,
I water my couch with my tears.
My eye wastes away because of grief,
It grows old because of all those who distress me.
He goes on to describe his present state, groaning both because of his illness and because of his conscience stricken state, so much so that his bed is soaked with tears. Indeed it has affected his eyes, which reveal what he is going through, made worse by his adversaries who mock him in his state. The state of a man's health is often revealed by his eyes, and here his eye ‘grows old', that is, wrinkled and careworn.
Very few who are God's have not experienced such times. Times of distress and smitten conscience, when they grew weary of the sense of sin and longed for deliverance. It is often a prelude to blessing, but it does not seem so at the time.