Psychophysical Measurements of Luminance Contrast Sensitivity and Color Discrimination with Transparent and Blue-Light Filter Intraocular Lenses.

Introduction: The purpose of this study was to measure luminance contrast sensitivity and color vision thresholdfs in normal subjects using a blue light filter lens and transparent intraocular lens material.

Methods: Monocular luminance grating contrast sensitivity was measured with Psycho for Windows (version 2.36; Cambridge Research Systems) at 3.

Evaluation of the Efficacy and Safety of the New Susanna Glaucoma Drainage Device in Refractory Glaucomas: Short-term Results.

Purpose: To assess the efficacy and safety of the new Susanna glaucoma drainage device (SGDD) in patients with neovascular and refractory glaucomas.

Materials And Methods: In this prospective study, patients with neovascular glaucoma or refractory glaucomas (defined as eyes with previous trabeculectomy failure) were enrolled. All eyes had to have intraocular pressure (IOP) above 21 mm Hg despite maximum tolerated topical medication, or recent documentation of anatomic and/or functional progression.

Direct cyclopexy surgery for post-traumatic cyclodialysis with persistent hypotony: ultrasound biomicroscopic evaluation.

Cyclodialysis is a relatively rare condition usually caused by ocular injury; however, it can also be caused iatrogenically during intraocular surgery. Hypotony maculopathy is the most important complication and the primary reason for visual loss. Clinical diagnosis using gonioscopy may be difficult, and ultrasound biomicroscopy (UBM) can be an alternative.

Evaluation of magnocellular pathway abnormalities in schizophrenia: a frequency doubling technology study and clinical implications.

Background: Visual processing deficits have been reported for patients with schizophrenia. Previous studies demonstrated differences in early-stage processing of schizophrenics, although the nature, extent, and localization of the disturbance are unknown. The magnocellular and parvocellular visual pathways are associated with transient and sustained channels, but their respective contributions to schizophrenia-related visual deficits remains controversial.

Visual field loss in schizophrenia: evaluation of magnocellular pathway dysfunction in schizophrenic patients and their parents.

Purpose: We sought to evaluate the visual pathway deficits in schizophrenic patients, compared with their parents and healthy controls, using Matrix frequency doubling technology (FDT) perimetry. Matrix FDT is an ophthalmic test used to detect visual field loss.

Method: A total of 13 patients, 13 parents, and 12 healthy controls were enrolled in the study.

The potential neuroprotective effects of weekly treatment with glatiramer acetate in diabetic patients after panretinal photocoagulation.

Purpose: Evaluation of the neuroprotective effect of weekly glatiramer acetate (GA) on retinal structure and function in diabetic patients who underwent panretinal photocoagulation (PRP).

Patients And Methods: patients with severe nonproliferative or early diabetic proliferative retinopathy and no previous laser treatment were randomly divided into two groups: (1) those who received four GA treatments and (2) those who received placebo treatment. The subcutaneous injections were administered 1 week prior to laser and weekly in the subsequent three sessions of PRP in both groups.

Intraocular pressure and ocular perfusion during hemodialysis.

Aim: To evaluate the intraocular pressure and ocular perfusion pressure during a hemodialysis.

Methods: Sixty-seven eyes from thirty-five patients were evaluated at the beggining of hemodialysis, 2 hours and 4 hours after initiation. Intraocular pressure was evaluated using a Tonopen.

Glaucoma anterior chamber morphometry based on optical Scheimpflug images.

Purpose: To compare the performance of gonioscopy and noncontact morphometry with anterior chamber tomography (High Resolution Pentacam - HR) using optical Scheimpflug images in the evaluation of the anterior chamber angle (ACA).

Methods: Transversal study. 112 eyes from 74 subjects evaluated at the Glaucoma Department, Fluminense Federal University, underwent gonioscopy and Pentacam HR.

Factors affecting the variability of the Heidelberg Retina Tomograph III measurements in newly diagnosed glaucoma patients.

Purpose: To determine factors associated with the test-retest variability of optic nerve head (ONH) topography measurements with confocal scanning laser ophthalmoscopy (CSLO) in newly diagnosed glaucomatous patients.

Methods: Consecutive patients with newly diagnosed primary open-angle glaucoma were prospectively enrolled. Patients presenting with any ocular disease other than glaucoma were excluded.

Simulated cup/disc ratio: a tool for ophthalmologists.

Purpose: To evaluate and compare the observers' ability to measure simulations of cup/disc ratios (CDR) as concentric and non-concentric circles.

Methods: In a prospective, random, and masked setting, 43 images representing the CDR spectrum from 0.2 to 0.

[Decrease of upper eyelid levator muscle function after involutional ptosis and dermatochalasis surgery].

Purpose: To evaluate the differences between upper eyelid levator muscle function (UELMF), margin reflex distance (MDR1), and eyelid crease height (ECH) before and after ptosis and dermatochalasis surgery.

Methods: Forty-four patients with blepharoptosis and dermatochalasis were enrolled.

Intervention: An exploration of the levator tendon (LT) during a blepharoplasty procedure in patients with blepharoptosis and dermatochalasis and in case of its disinsertion, the tendon was reattached to the tarsus.

[Preliminary results of a computerized and stereoscopic system for in vivo pupillometry].

Purpose: We developed a digital system with accommodation capacities for measurement of the diameter and shape of the in vivo pupil for 10 different levels of illumination intensity, varying from mesopic to photopic.

Methods: An optical system for conjugating images from an infrared and white light illuminated pupil was designed and mounted using an ophthalmoscope helmet and a typical diving mask as support for a high-resolution and sensitivity CCD. Using an IBM compatible computer sequences of video in AVI format were digitized for several seconds at a mean rate of 30 Hz.

[Association between optic disc hemorrhages and the position of central retinal vessels].

Purpose: To investigate the correlation between optic disc hemorrhages (ODHs) and the position of the central retinal vessel trunk (RVT) in patients with glaucoma.

Methods: Fundus photographs of 1,830 participants were reviewed. The exit position of the central retinal vessel trunk was classified as being in the superior or inferior hemisphere of the optic disc and the relative vertical position was expressed as a fraction of the disc diameter (ratio between the position of the trunk and the diameter of the disk).

[Epidemiological and clinical features of allergic conjunctivitis in a reference center].

Background: To evaluate demographic and clinical features of patients with allergic conjunctivitis in a reference center.

Methods: Prospective study using sings and symptoms graduated by standardized charts for clinical diagnosis.

Results: We evaluated 207 patients, age ranging form 1 to 45 years and of whom 131 (63.

[Artificial neural networks applied to study allergic conjunctivitis screening questionnaire].

Purpose: To evaluate sensibility and specificity of a screening questionnaire with multivariable analysis, compare them and elaborate an artificial neural network for future screenings.

Methods: Observational, transversal study performed at UNIFESP, with 48 patients with allergic conjunctivitis and 54 children without the disease. Their age ranged between 3 and 14 years and there was no restriction related to gender, systemic allergy or treatment.

Comparison between results of trabeculectomy in primary congenital glaucoma with and without the use of mitomycin C.

Purpose: To evaluate the results of trabeculectomy with and without the use of mitomycin C in children with primary congenital glaucoma.

Methods: The authors retrospectively studied the data of 91 patients who underwent the first trabeculectomy for primary congenital glaucoma, with 19 years of follow-up. Success criteria were set with two distinct values of intraocular pressure: lower or equal to 15 mm Hg or lower than 21 mm Hg and separately analyzed.