A recent study by researchers from China and the UK suggests that laughter therapy could be an innovative treatment for dry eyes. Involving 283 participants, the study compared laughter exercises to sodium hyaluronic acid eye drops. Findings revealed that laughter therapy was as effective as eye drops and also enhanced mental health. A recent study by researchers from China and the UK suggests that laughter therapy could be an innovative treatment for dry eyes. Involving 283 participants, the study compared laughter exercises to sodium hyaluronic acid eye drops. Findings revealed that laughter therapy was as effective as eye drops and also enhanced mental health. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle