1)Whitacre MM, Stein RA, Hassanein K:The effect of corneal thickness on applanation tonometry. Am J Ophthalmol 115:592-596, 1993
2)Fujioka M, Nakamura M, Tatsumi Y et al:Comparison of Pentacam Scheimpflug camera with ultrasound pachymetry and noncontact specular microscopy in measuring central corneal thickness. Curr Eye Res 32:89-94, 2007
3)Ebneter A, Wagels B, Zinkernagel MS:Non-invasive biometric assessment of ocular rigidity in glaucoma patients and controls. Eye 23:606-611, 2009
4)Lam AK, Chen D:Effect of proparacaine on central corneal thickness values:an evaluation using noncontact specular microscopy and Pentacam. Cornea 26:55-58, 2007
5)Prydal JI, Artal P, Woon H et al:Study of human precorneal tear film thickness and structure using laser interferometry. Invest Ophthalmol Vis Sci 33:2006-2011, 1992
6)Modis L Jr, Langenbucher A, Seitz B:Corneal thickness measurements with contact and noncontact specular microscopic and ultrasonic pachymetry. Am J Ophthalmol 132:517-521, 2001
7)Suzuki S, Oshika T, Oki K et al:Corneal thickness measurements:scanning-slit corneal topography and noncontact specular microscopy versus ultrasonic pachymetry. J Cataract Refract Surg 29:1313-1318, 2003
8)Amano S, Honda N, Amano Y et al:Comparison of central corneal thickness measurements by rotating Scheimpflug camera, ultrasonic pachymetry, and scanning-slit corneal topography. Ophthalmology 113:937-941, 2006
9)Yildirim N, Sahin A, Basmak H et al:Effect of central corneal thickness and radius of the corneal curvature on intraocular pressure measured with the Tono-Pen and noncontact tonometer in healthy schoolchildren. J Pediatr Ophthalmol Strabismus 44:216-222, 2007
10)Bhan A, Browning AC, Shah S et al:Effect of corneal thickness on intraocular pressure measurements with the pneumotonometer, Goldmann applanation tonometer, and Tono-Pen. Invest Ophthalmol Vis Sci 43:1389-1392, 2002
11)Tonnu PA, Ho T, Newson T et al:The influence of central corneal thickness and age on intraocular pressure measured by pneumotonometry, non-contact tonometry, the Tono-Pen XL, and Goldmann applanation tonometry. Br J Ophthalmol 89:851-854, 2005
12)Ehlers N, Bramsen T, Sperling S:Applanation tonometry and central corneal thickness. Acta Ophthalmol(Copenh) 53:34-43, 1975
13)Suzuki S, Suzuki Y, Iwase A et al:Corneal thickness in an ophthalmologically normal Japanese population. Ophthalmology 112:1327-1336, 2005