purpose: to determine the effect of retained donor descemet membranes (dms) on visual outcomes following deep anterior lamellar keratoplasty (dalk). methods: in this retrospective comparative study, keratoconic eyes undergoing dalk using the big-bubble technique were enrolled. a bared dm was achieved in all cases. a donor cornea without (group 1; 48 eyes) or with (group 2; 22 eyes) dm was sutur...

mated Bowman layer preparation with a 90to 100-mm-thick donor lamella of anterior stroma (instead of an 8to 12-mm-thick isolated Bowman layer graft). In our experience, the presence of donor stroma seems to degrade the optical quality of the transplanted cornea (as Descemet stripping endothelial keratoplasty/Descemet stripping automated endothelial keratoplasty grafts containing donor stroma ma...

We aimed to present the differential diagnosis and treatment of Descemet membrane detachment (DMD) in a patient with acute corneal edema after phacoemulsification surgery. A 52-year-old female presented our clinic visual impairment secondary DMD, which was noticed on postoperative 16th day routine surgery left eye. On day, acuity case was; 0.8 right eye from 50 cm at level counting finger. In b...

Department of Ophthalmology, Sir Run Run Shaw Hospital, Zhejiang Univ Abbreviations and Acronyms: CDS 1⁄4 Cornea Donor Study; DMEK 1⁄4 Descemet membrane endothelial keratoplasty; DSEK 1⁄4 Descemet stripping endothelial keratoplasty; ECD 1⁄4 endothelial cell density; EK 1⁄4 endothelial keratoplasty; FECD 1⁄4 Fuchs’ endothelial corneal dystrophy; MCMC 1⁄4 Markov chain Monte Carlo; PACE 1⁄4 pseudo...

OBJECTIVE To describe the use of a single donor corneal tissue in 3 patients with corneal pathologic conditions. METHODS A donor corneal tissue was divided into 3 parts using a microkeratome and a trephine. The anterior lamellar disc was transplanted into a patient with macular corneal dystrophy using the automated lamellar therapeutic keratoplasty technique. The posterior lamellar disc was t...

Here we report a case of endothelial keratoplasty with infant donor tissue obtained after brain death. A 52-year-old man with endothelial dysfunction of unknown cause in the right eye underwent non-Descemet stripping automated endothelial keratoplasty (nDSAEK) with tissue from an infant donor (2 years). Intraoperative and postoperative complications were recorded. Best corrected visual acuity a...

PURPOSE The aim of this study was to describe the challenges in Descemet membrane endothelial keratoplasty (DMEK) donor preparations and provide new strategies to achieve success. METHODS A series of 263 consecutive DMEK preparation attempts by a novice surgeon during a corneal fellowship are described. In all cases, the Descemet membrane (DM) and the endothelium were peeled off from the dono...

OBJECTIVE To evaluate Descemet membrane endothelial keratoplasty for management of corneal endothelial disorders. METHODS Descemet membrane endothelial keratoplasty was performed in 200 patients with Fuchs endothelial dystrophy or bullous keratopathy. Best-corrected visual acuity, subjective and objective refractive outcome and stability, and endothelial cell density were evaluated at 1, 3, a...

Zwischen zwei Räumen verschiedener Temperatur, die mit demselben Gas bzw. derselben Flüssigkeit gefüllt und durch eine permeable Membran getrennt sind, stellt sich ein Druckunterschied ein, der von der diffundierenden Substanz und von der Natur der Membran abhängt. Überlegungen über die Diffusionsschritte an der Membranoberfläche und in der Membran zeigen den Zusammenhang zwischen dieser „Therm...

We used a surgical technique that combines deep lamellar keratoplasty, phacoemulsification, and intraocular lens implantation for treating patients with cataract and corneal stromal disease. Deep lamellar dissection of the cornea was first performed with viscoelastic substances (hyaluronate sodium) until the highly transparent Descemet membrane solely remained. We then created a short corneal t...