1Robert M. Bogin, Andrew J. Fletcher. The Merck Manual of Diagnosis and Therapy[M]. In:Section 8. Ophthalmologic Disorders,Chapter 96. Corneal Disorders Seventeenth Edition, 1999.
2Richard C. Niemtzow, Kevin J. Kempf, Peter A. S. Johnstone. Acupuncture For xerophthalmia[J]. Medical Acupuncture, 13(3): 21-22.