Well, generally speaking, crying can be bad for your eyes, for it can lead to high eye pressure. As we know that if you cry too much, your blood pressure will be high. And then, your eye pressure will turn high too. And you should know that it can lead to some other eye diseases, such as the red eyes and bloodshot. To relax your eyes, you can sip fluids all the time. By sipping small amounts of fluids constantly, it will control your eye pressure. Also, some eye drops, such as beta blockers or carbonic anhydrase inhibitors can be effective too. Besides, cool cucumber can be good for your situation too. so just have a try.