1. G.O. Waring, Making sense of keratospeak a classification of refractive corneal surgery. Arch. Ophthalmol. 103(10), 1472–77 (1985)
2. R.L. Lindstrom, Minimally invasive radial keratotomy: mini-rk. J. Cataract Refract. Surg. 21(1), 27–34 (1995)
3. A. Arciniegas, L.E. Amaya, Asociación de la queratotomía radial y la circular para la corrección de ametropías. Enfoque biomecánico, chapter XXII. Soc. Am. de Oftalmología, Bogotá (1981)
4. R.A. Villaseñor, G.R. Stimac, Clinical results and complications of trapezoidal keratotomy. J. Refract. Surg. 4, 125–131 (1988)
5. Board of Directors of the International Society of Refractive Keratoplasty, Statement on radial keratotomy in 1988. J. Refract. Surg. 4, 80–90 (1988)