Roberto Pinto Coelho

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OBJECTIVE This study used image processing techniques to quantify the upper eyelid contour of patients with Graves upper eyelid retraction and congenital blepharoptosis. DESIGN The study design was a cross-sectional study. PARTICIPANTS A total of 29 patients with Graves disease, 22 patients with congenital blepharoptosis, and 50 patients with no history(More)
PURPOSE To evaluate patient-reported pain induced by phacoemulsification without sedation using topical or peribulbar anesthesia. SETTING Department of Ophthalmology, School of Medicine of Ribeirão Preto, São Paulo, Brazil. METHODS This study assessed patient-perceived pain during phacoemulsification cataract surgery with peribulbar anesthesia(More)
PURPOSE To compare the extent of corneal endothelial (CE) cell loss changes in two groups of eyes submitted to phacoemulsification, with the conventional bevel-up tip position in one eye and with the bevel-down tip position in the fellow eye. METHODS This prospective clinical trial comprised 25 patients with bilateral cataracts subjected to lens removal(More)
BACKGROUND AND OBJECTIVE To compare the results of preoperative Nd:YAG laser anterior capsulotomy versus two-stage continuous curvilinear capsulorhexis (CCC) in phacoemulsification of eyes with white intumescent cataracts and liquefied cortex. PATIENTS AND METHODS Twenty-three eyes with white intumescent cataract were consecutively randomized for(More)
PURPOSE To compare the analgesic efficacy of 2 types of anesthetic techniques-topical and topical associated with cryoanalgesia-during cataract surgery. SETTING Department of Ophthalmology, University of São Paulo, Ribeirão Preto, Brazil. DESIGN Prospective randomized study. METHODS Patients with symmetrical bilateral cataract had phacoemulsification(More)
We report a case of a 58-year-old man presenting with a spontaneous and late in-the-bag intraocular lens dislocation to the vitreous. A previous uneventful extracapsular cataract extraction with can-opener style capsulotomy and implantation of a polymethylmethacrylate three-piece lens was performed and, two years after the surgery, the patient developed(More)
PURPOSE To determine the incidence of Piry virus contamination among surgical instruments used with disposable accessories for phacoemulsification during sequential surgeries. METHODS An experimental model was created with 4 pigs' eyes that were contaminated with Piry virus and 4 pigs' eyes that were not contaminated. Phacoemulsification was performed on(More)
Creating a continuous curvilinear capsulorhexis in eyes with white intumescent cataracts is a challenge due to the high risk of extension of capsular tears to the lens periphery. Several approaches have been described to avoid this complication and preoperative Nd:YAG laser anterior capsulotomy has been little reported as an optional technique. Eleven(More)
PURPOSE To compare 2-dimensional palpebral fissure measurements of normal subjects with voluntary upper eyelid retraction and patients with Graves upper eyelid retraction. METHODS Three groups of monocular palpebral fissure images were measured. Group 1 consisted of 32 images of healthy subjects with the upper eyelid in a normal position of rest. Group 2(More)