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.

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 […]

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 […]

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 […]

OBJETIVO: Descrever uma nova técnica para caracterização clínica das propriedades biomecânicas da córnea, usando sistema de imagem dinâmica não invasivo. MÉTODOS: A resposta de deformação da córnea é monitorada durante tonometria de não contato com fotografia de Scheimpflug de altíssima velocidade. O Oculus Corvis ST (Scheimpflug Technology; Wetzlar, Germany) apresenta uma câmera UHS Scheimpflug que adquire mais que 4.300 fotos por segundo com cobertura de 8mm horizontais para monitorar a resposta de deformação durante a tonometria de não contato por […]

Despite being rare, ocular injury due to a compact disc burst can be responsible for severe ocular damage. We present in this article a case of corneal perforation in addition to lens trauma caused by intentional compact disc break. A 44 year old female physician was examined complaining of visual acuity decrease, light sensitivity, tearing and foreign body sensation on OD after watching a compact disc being broken intentionally. In the first examination, she had a corneal perforation with aqueous […]

PURPOSE: The methodology currently used for interpretation of the cornea and anterior segment tomography for the diagnosis of corneal ectasia and its susceptibility. METHODS: Description of the methodology and clinical interpretation of corneal and anterior segment tomography indexes; report of three cases demonstrating the importance of this new diagnostic tool (Pentacam HR®) in ophthalmological practice. CONCLUSION: The use of corneal and anterior segment tomography seems to be an effective method to increase the sensitivity and specificity for the diagnosis and […]

PURPOSE: To evaluate the contact lenses fitting with respect to visual improvement in patients with keratoconus. METHODS: We conducted a prospective study of 54 patients (99 eyes) attending the Contact Lens Clinic of Faculdade de Medicina do ABC (FMABC) from january 2010 to november 2010. Data were collected on gender, age, treated eyes, degree of keratoconus, initial visual acuity (VA) and final VA after fitting. RESULTS: Of the patients, 44% were women and 56% men. Forty-six point forty-seven percent of […]