Number of people has allergies or asthma is one in five! Allergy patients can present themselves with itchy, red, watery and dry eyes. They often complain of having a constant cold. Chronic dry eye is often associated with ocular allergy. http://ifi.edu.vn/index.php?language=vi&nv=users&nvvithemever=t&nv_redirect=aHR0cHM6Ly93d3cub3B0aWNhbGpvdXJuYWwuY29tL2RyeS1leWVzLXgtb2N1bGFyLWFsbGVyZ3kteC1nbGF1Y29tYS8