Yesterday i was carrying an envelope in my hand.While getting down from the car the envelope hit my eye.Just slight pain that time but few hours later i applied ikool drops after the which the pain has become unbearable and the eye has turned red.It feels like something is stuck in my eye but when i see nothing is stuck.There is immense pain while blinking.This problem is only in left eye.Please tell me treatment and ways to reduce pain and redness