Is it okay to smoke if hyphema?

No relationship: Hyphema is due to bleeding in the eye, the most common cause being trauma and rarely it is caused by internal eye dysfunction such as diabetes and internal eye tumors. Smoking will not affect this one way or another but this is a wonderful opportunity to reasses your smoking addicition and to try and stop it altogether.

Quit Smoking: Smoking is not a good practice for your overall health and well being, and will likely interfere with wound healing. Try to quit smoking. Good luck.