purpose: to evaluate the effect of posterior residual stroma on visual function after unsuccessful anwar's deep anterior lamellar keratoplasty (dalk). methoods: in this parallel historical cohort, visual acuity and refractive status were evaluated after descemetic dalk (group 1) and compared with those of pre-descemetic dalk (group 2). results: one hundred and ten keratoconic eyes were enr...

OBJECTIVE To compare 3 techniques used for removing the recipient stroma during anterior lamellar keratoplasty (ALK): the "big-bubble" technique, manual dissection using a crescent blade and slitlamp operating microscope, and microkeratome lamellar cut. DESIGN Retrospective comparative cohort study of 69 consecutive ALKs and 69 consecutive penetrating keratoplasties (PKs). Manifest refraction...

PURPOSE During deep anterior lamellar keratoplasty (DALK), endothelium and Descemet's membrane are separated from the corneal stroma by intrastromal air injection ('big-bubble technique'). The aim of our study is to analyse histopathological changes in host corneal tissue caused by air insufflation in patients with keratoconus, their variability in 10 patients and their possible clinical implic...

Purpose. To report the 12-month follow-up after big-bubble deep anterior lamellar keratoplasty (DALK) assisted by femtosecond laser that we have called IntraBubble. Methods. A 60 kHz IntraLase femtosecond laser (Abbott Medical Optics) firstly created a 30° angled intrastromal channel to insert the air injection cannula, 50 μ above the thinnest corneal site measured by Sirius Scheimpflug camera ...

An investigation was carried out for swirling flow in a rotating pipe with highly viscous fluid containing micro-bubbles experimentally and numerically. In the numerical analysis, bubble trajectory of each bubble was calculated using resultant numerical flow field solutions. From experimental results, with an aid of the numerical simulation, data were obtained for the location of a stagnation p...

PURPOSE To describe a case of traumatic wound dehiscence after deep anterior lamellar keratoplasty. METHOD Observational case report. CASE REPORT A 31-year-old man who had undergone deep anterior lamellar keratoplasty using big-bubble technique for keratoconus 3 months earlier presented to emergency room after blunt trauma.On examination, visual acuity was counting fingers at 2 m. The corne...