This is infection of eyelid, stye. Do warm compress 2-3 times daily for 7 days. Give antibiotic, like, syrup Clavam BID - 1 tea spoon full, 2 Times daily for 5 days. If there is pain, give syrup Ibugesic plus- 1 tea spoon full 2 Times daily for 3 days. You can apply an antibiotic ointment also, like, Ocupol ointment- 2 Times daily for 5 days.
Next Steps
if no improvement, consult an eye specialist immediately.