The use of the Ocular Response Analyser to determine corneal hysteresis in eyes before and after excimer laser refractive surgery

Reproducibility of ocular response analyzer measurements and their correlation with central corneal thickness

“…High repeatability of intraocular pressure measurements is a precondition of successful glaucoma management. On the other hand, only reproducible corneal biometrics can be helpful to determine patients for keratorefractive surgery [22]. Both low CH and thin cornea may be considered as important risk factors for developing of post-LASIK corneal ectasia.…”

Corneal resistance factor and corneal hysteresis in a 6- to 18-year-old population

“…7 Some studies [8][9][10] have evaluated the normal ranges of these indices in different samples. In most studies, the mean CH and the CRF in normal eyes range between 10 mm Hg and 11 mm Hg, [8][9][10] and the reported range in normal populations is between 8 mm Hg and 16 mm Hg.…”

PRK em olhos com topografia atípica e pentacam normal

“…Apart from changes in corneal anatomy, another factor to be considered is corneal resistance, which plays a key role in the development of ectasia after laser surgery. This has lead many researchers to conduct in-depth studies of the biomechanics of the cornea (25) , but the results still have low sensitivity and specificity in unconfirmed cases of keratoconus (26) . Another device currently under development examines the deformation of corneal tissue by a jet of air through a series of Scheimpflug images, associating the curvature of the cornea with its biomechanical response (27) .…”