1. Bufidis T, Constas AGP, Mamtziou E (1998) The role of computerized corneal topography in rigid gas permeable contact lens fitting. CLAO J 24:206–209
2. Maeda N, Klyce SD, Hamano H (1994) Alteration of corneal asphericity in rigid gas permeable contact lens induced warpage. CLAO J 20:27–31
3. Anera R, Jiménez JR, Jiménez L et al (2003) Changes in corneal asphericity after laser in situ keratomileusis. J Cataract Refract Surg 29:762–768
4. Gatinel D, Hoang-Xuan T, Aznar DT (2001) Determination of corneal asphericity after myopia surgery with the laser excimer: a mathematical model. Invest Ophthalmol Vis Sci 42:1736–1742
5. Applegate RA, Hilmantel G, Howland HC et al (2000) Corneal first surface optical aberrations and visual performance. J Refract Surg 16:507–514