[Residual astigmatism after transfixing keratoplasty in keratoconus].

The authors made a statistical study of the refraction and corneal topography in 21 patients who had penetrating grafts for keratoconus performed by the same surgeon one year or more previously. They used various criteria among which the following were important: -- the importance of Javal ophthalmometry to determine the astigmatism for prescription; -- good visual results; -- the recording of significant corneal deformities during the topographical studies.