Is it Eye or Heart?

Is it eye or heart that we see ? Can we tell or classify or differentiate the things we see are seen by either eyes or heart. Do they contradict each other or compliment each other?. When we see things how should we know which one is selected ...? coz though you see with eye some respond with the heart , if we see with heart they see with eye. How should one feel the vision plays such a drastic role of things we see, when we see with heart i doubt one can stare to see into others eyes and watching into each other eyes is tough ( so easy they show in movies...try to stare ) . When u have pain we say tears come out of pain, when heart get hurts does tears come out ...don't know how many gets like that.....how can same eyes of many people feel the same when one sees the same object... how this is happening....i believe this causes lot of pain if it is thought in both ends, one can't justify themselves with the decision both eyes and heart makes.
Why sometimes when we see with our eyes through heart aches if the people u like/love are going faraway ..... the same when u know that he/she is not yours. How can once heart or eyes confirm that the beauty/content/thing/object we see is responding to you. A human can reply you back how about others .... i think those things are meant to be felt not to be shown. When one feels pain we can see tears in once eyes but how can we show the bleed of blood tears when once heart aches with the pain caused to it . Do we have strength to control any of these.do u have... i doubt myself sometimes may otherwise may not . There are many instances i felt both my eyes and heart filled with joy and happy sometimes and also the same instances caused me pain, does the same happen with everyone, i always feel that someone should strive to take away someones pain and make them more happier than you ever.Eyes and heart they give you everything pain & joy, tears & bleed. Feel for someone , making someone happy,making someone cry for you and viceversa done to you.
Hope someday we see things or mold them as we like ( which is very tough one). The day when someone or many peoples eyes cry and their heart aches for you forever and ever. Can we say whether it is eye or heart we see the things.