Korb D R, Finnemore V M, Herman J P
J Am Optom Assoc. 1982 Mar;53(3):199-205.
Seven keratoconus patients were fitted with gas-permeable lenses, one eye with a large apical bearing lens and the other with a small apical clearance lens. Within 12 months, 4 of the 7 eyes wearing the large flat technique developed corneal scarring, while no scarring developed in the eyes fitted with the apical clearance technique.
七名圆锥角膜患者佩戴了透气性镜片，一只眼睛佩戴大顶点支撑镜片，另一只眼睛佩戴小顶点间隙镜片。在12个月内，采用大平面技术的7只眼中有4只出现了角膜瘢痕形成，而采用顶点间隙技术的眼睛未出现瘢痕形成。
