We present a case of late high progressive astigmatism following penetrating keratoplasty for keratoconus, which was associated with peripheral thinning in the donor-receptor area, which may be recognized as recurrence of ectasia. Treatment was accomplished with Cvintal’s Topoplasty assisted by femtosecond laser for a “top hat”, followed by resuture with peroperative adjustment guided by ceratoscopy.

Diabetic retinopathy is the leading cause of blindness among the working population in the developed world. The prevalence of diabetic retinopathy increases with duration of diabetes, and nearly 100 percent of patients with type I diabetes and more than 60 percent of those with type II have some signs of diabetic retinopathy after 20 years.A number of approaches have proved to be useful in the treatment of diabetic retinopathy, such as laser photocoagulation and tight systemic control of blood glucose, […]

Encouraged mostly 1-) by the visibility of the scientific journals in the nonprofessional and professional environment resulted from indexation of good quality journals based on electronic data and search tools, allowing the reader (clients or colleagues) to find related publications on the internet, and 2-) by the introduction of Graduate Programs (stricto sensu – master and doctor degrees) of the main universities, and also by the need of young ophthalmologists to distinguish themselves with academic titles, many doctors may become […]

In the early ’80s, the advent of elective surgeries in order to reduce dependence of vision correction (eyeglasses or contact lenses) determined profound changes in Ophthalmology. Although refractive procedures were initially controversial, they quickly gained popularity among physicians and potential candidates. This determined a demand for developments in knowledge. With that, there was a great stimulus for research in basic and clinical chairs, which increased the understanding of various aspects of physiology, pathology, and diagnosis in corneal and ocular optics. […]

PURPOSE: The study of fungal invasion and pathogenicity in corneal tissue observed through the histopathological examination of specimens obtained through penetrating keratoplasty (‘PKP’) of samples obtained from an Eye Bank (‘EB’), with the aim of applying findings in diagnosis and treatment of the condition METHODS: Retrospective non-comparative case studies on samples collected between January 2006 and June 2011 based on identification data comprised of scant historical information sent by surgeons and material obtained through PKP, consisting of 38 samples from […]

OBJETIVO: Avaliar as alterações topográficas da córnea após a realização de vitrectomia via pars plana 20-gauge associada à introflexão escleral para o tratamento do descolamento de retina regmatogênico. MÉTODOS: Vinte e cinco pacientes com descolamento de retina regmatogênico foram incluídos neste estudo. Vitrectomia via pars plana 20-gauge associada à introflexão escleral foi realizada em todos os pacientes. O exame de topografia de córnea computadorizada de cada paciente foi realizado antes da cirurgia e ao sétimo dia, trigésimo dia e três […]

PURPOSE: To evaluate the changes in corneal topography after 20-gauge pars plana vitrectomy associated with scleral buckling for the repair of rhegmatogenous retinal detachment. METHODS: Twenty-five eyes of 25 patients with rhegmatogenous retinal detachment were included in this study. 20-gauge pars plana vitrectomy associated with scleral buckling was performed in all patients. The corneal topography of each was measured before surgery and one week, one month, and three months after surgery by computer-assisted videokeratoscopy. RESULTS: A statistically significant central corneal […]

OBJECTIVE: To describe a novel technique for clinical characterization of corneal biomechanics using non-invasive dynamic imaging. METHODS: Corneal deformation response during non contact tonometry (NCT) is monitored by ultra-high-speed (UHS) photography. The Oculus Corvis ST (Scheimpflug Technology; Wetzlar, Germany) has a UHS Scheimpflug camera, taking over 4,300 frames per second and of a single 8mm horizontal slit, for monitoring corneal deformation response to NCT. The metered collimated air pulse or puff has a symmetrical configuration and fixed maximal internal pump […]