1. Department of Scientific Research, Changzheng Hospital, Second Military Medical University, Shanghai, P.R. China.
2. Department of Ophthalmology, Changzheng Hospital, Second Military Medical University, Shanghai, P.R. China.
3. Department of Diving Medicine, Faculty of Naval Medicine, Changhai Hospital, Second Military Medical University, Shanghai, P.R. China.
4. Department of Ophthalmology, Changhai Hospital, Second Military Medical University, Shanghai, P.R. China.