SLOANE, A E Refraction clinic. [electronic resource] - American journal of ophthalmology Dec 1950 - 1917-9 p. digital Publication Type: Journal Article ISSN: 0002-9394 Standard No.: 10.1016/0002-9394(50)90012-2 doi Subjects--Topical Terms: EyeHumansHyperopiaRefraction, OcularVision Tests