Gustavo Bonfadini

Johns Hopkins University | JHU · Wilmer Eye Institute

Background: Corneal transplantation success depends on good practices in tissue selection and preservation. This study aimed to assess the relationship between the time from the donor's death to the end of processing and corneal cellularity provided by the Eye Bank. Methods: This was a retrospective study of 839 donor records (2013-2021) from th...

Purpose: To investigate the relationship between quantitative iris parameters and the presence of keratoconus. Methods: Cross-sectional observational study that included 15 affected eyes of 15 patients with keratoconus and 26 eyes of 26 normal age- and sex-matched controls. Iris parameters (area, thickness, and pupil diameter) of affected and unaf...

Objective: We describe a novel spatula and dissector to facilitate the big-bubble technique in deep anterior lamellar keratoplasty (DALK). Methods: A 29-year-old man who was diagnosed with bilateral keratoconus underwent deep anterior lamellar keratoplasty (DALK). After 350μm partial thickness incision of the recipient cornea, the Bonfadini dissec...

This paper aims to describe the process of organ and tissue donation, tissue harvesting, queue and transplants as a health policy in Brazil and in the State of Rio de Janeiro, with emphasis on procedures for corneal transplantation. The low reporting of possible donors associated with a high rate of negative family in donation, associated with the...

We describe an inexpensive, simple, and effective endothelium-Descemet membrane (EDM) graft injector assembled from regular operating room supplies in Descemet membrane endothelial keratoplasty (DMEK). To assemble the injector, standard intravenous tubing was cut approximately 2 inches from the Luer lock end, leaving a steep bevel. The cut end of t...

Descrevemos o uso de novos instrumentais cirúrgicos para facilitar a técnica de “big-bubble” na ceratoplastia lamelar anterior profunda (Transplante Lamelar de Córnea–DALK). Métodos: Paciente masculino, 29 anos, foi diagnosticado com ceratocone bilateral e submetido a ceratoplastia lamelar anterior profunda (DALK). Após incisão da córnea receptora...

A variation of the femtosecond laser-assisted sutureless anterior lamellar keratoplasty technique using a femtosecond laser incision for surgical management of anterior corneal disease is described. Six patients with corneal scars were treated with the laser to create a horizontal lamellar bed interface in the cornea of the donor and recipient eyes...

The authors describe “iris-assisted,” open-sky, con- tinuous curvilinear capsulorhexis (CCC) in a triple procedure combining corneal transplantation, cata- ract extraction, and intraocular lens implantation. They do not use miotics or mydriatics. Patients re- ceive oral acetazolamide (250 mg), intravenous man- nitol (5 mL/kg), and Honan balloon at...

Purpose: To evaluate the accuracy of intraocular lens (IOL) power calculations with A-constant optimization in Descemet's stripping automated endothelial keratoplasty (DSAEK) combined with cataract extraction and intraocular lens implantation (DSAEK triple procedure). Design: Retrospective case series. Participants: Thirty eyes of 22 patients...

Objective: To determine the eye diseases in children from three to six years of age in a Family Health Program assisted area ("Programa de Saúde da Família (PSF)" in Lapa - Rio de Janeiro, and the causes of ophthalmologic trial absence. Methods: A transversal study based on ocular trial that consisted of anamnesis, ectoscopy, visual acuity, direct...