Green, Morris , and Richmond, Julius B.: Pediatric Diagnosis. Philadelphia and London, W. B. Saunders Co., 1960.
2.
Hatfield, Elizabeth Macfarlane: A year's record of preschool vision screening. The Sight Saving Review36: 194, 1966.
3.
Krupke, Sidney S., Dunbar, Constance A., and Zimmerman, Vivian: Vision screening of preschool children in mobile clinics in Iowa. Public Health Rep.85: 41, 1970.
4.
—: ibid., pp. 41-45.
5.
Lippman, Otto : Vision screening of young children. AJPH61: 1598, 1970.
6.
—: ibid., pp. 1598-1601.
7.
—: ibid., pp. 1598-1601.
8.
Press, Edward : Screening of preschool children for amblyopia . JAMA204: 109, 1968.
9.
Sheridan, M.D. , and Gardiner, P.A.: Sheridan-Gardiner test for visual acuity . Br. Med. J.2: 108, 1970.
10.
—: ibid., pp. 108-109.
11.
—: ibid., pp. 108-109.
12.
Trotter, Robert R., and Phillips, Ruth M., and Shaffer , Kennetta: Measurement of visual acuity of preschool children by their parents. The Sight Saving Review36: 80, 1966.
