Mainland children recovering from sight-saving operations will awake to see drawings and words of encouragement from Hong Kong people. Thanks to the efforts of four final-year students at the City University of Hong Kong, the work of Project Orbis in helping people with blindness and visual impairment is also being promoted. Higher Diploma in English for Communication students Eppie Chan Sun-lui, 21, and Kitty Chu Wai-ching, Emily Hui Nga-yi and Georgiana Tam Wing-sum, each 22, organised campus charity campaigns as part of their final project to help blind youngsters in China. At a five-day exhibition this month, they introduced the background of Orbis and its work in China. Visitors, students and staff were invited to write words of encouragement on cards for the children. More than 300 youngsters aged six to 15 and their parents showed their support by taking part in a weekend of drawing activity. All 4,000 cards and 300 drawings the students gathered will be flown by the Orbis aircraft to China. 'The cards and pictures will be given to the blind children after their eye surgery the moment they open their eyes,' Ms Chan said. 'It expresses the concern of Hong Kong people for them. 'I learned more about Orbis [through this campaign] and I hope more students will help these blind children in China,' she said. The students hope to raise $15,000 for Orbis to add to the $8,000 collected at a Christmas charity sale. According to the World Health Organisation, there are more than 38 million blind people throughout the world, with 110 million visually impaired who are at great risk of becoming totally blind.