The Idiom that I've decided to make my own? To Keep an Eye On:

keep an eye on
1. To watch over attentively; mind.
2. To watch closely or carefully:

http://dictionary.reference.com/search?q=have%20one's%20eye%20on

v : follow with the eyes or the mind
Also, keep an eye on. Look at, especially attentively or continuously; watch. For example, The teacher has his eye on the boys in the back row, or Please keep an eye on the stew. [First half of 1400s]
Also, have an eye to. Have as one's objective, as in We had our eyes on that birthday cake, or The Republicans have an eye to a big majority in the House. The first usage dates from the mid-1600s, the second from the early 1500s

I've often heard it said that a watched pot never boils,

yet I feel it necessary to keep an eye on the stove.



Some people ask how it is I can play volleyball well when I do not have any depth perception. The reason is nothing more than what my dad taught me when I was young - "Keep your eye on the ball son!" He used to say.


This picture has absolutely nothing to do with the idiom. It's just me keeping an eye out for the bus.