A doctor instructs a student to read an eye chart at the Baoqing Road branch of Eye and ENT Hospital of Fudan University on Wednesday. Before Shanghai primary and middle school students officially return to the campus Thursday following the long New Year holiday, eye departments at numerous hospitals across the city received a sudden increase in young patients, many who required getting new glasses. Doctors warn that a growing number of Chinese children are suffering nearsightedness due to the prevalence of computers and smartphones. Photo: Feng Yu/GT