Chen, Ai-Hong The development of near visual function in young children / by Ai-Hong Chen - Sydney : School of Optometry, University of New South Wales, 1998 - xxiii, 345 p. : ill. ; 30 cm. Thesis (Ph.D.) - University of New South Wales, 1998 References: p. 263-310 Subjects--Topical Terms: Vision disorders in childrenHeterophoria