Conjunctivitis is usually caused by infection or allergy, resulting in redness, watering, and irritation in the eyes. Keep your eyes clean, wash gently with clean water, avoid touching or rubbing, and use a clean cloth to wipe any discharge. Rest your eyes, avoid screens and bright light, do not share towels, and maintain good hygiene to prevent the spread. If symptoms are severe, spreading, or not improving within a few days, consult a doctor for proper treatment.