Most sore eyes from crying are due to prolonged crying, which causes eye congestion and eyelid oedema. You should stop crying immediately, close your eyes and rest, apply a cold towel to your eyelids for a cold compress, or use eye drops, rest and distraction. If there is still no significant improvement and the soreness of the eyes increases, even with symptoms such as loss of vision, it is advisable to consult an ophthalmologist immediately to rule out glaucoma.