purpose: to compare corneal hysteresis and resistance factor after penetrating keratoplasty (pk) and deep anterior lamellar keratoplasty (dalk) using anwar’s big-bubble technique using the ocular response analyzer. methods: forty-five pk eyes and 23 dalk eyes with keratoconus were compared in terms of corneal hysteresis (ch), corneal resistance factor (crf), goldmann-correlated intraocular pres...

In various corneal injuries (such as chemical burns or irradiation of corneas with UVB radiation) and ocular diseases (e.g. dry eye disease, keratokonus, bullous keratopathy, Fuchs' endothelial dystrophy), the expressions of malondialdehyde (a marker of lipid peroxidation) and nitrotyrosine (a marker of oxidative stress) appeared in cells of individual corneal layers and conjunctival cells (dry...