Biomedical subjects

Haroldo Vieira de Moraes

Publications and source records attributed to Haroldo Vieira de Moraes.

5 recordsLinked to original sources

PubMed2006

[Fundus changes evaluation in degenerative myopia].

PURPOSE: To evaluate the presence of fundus changes in degenerative myopia. METHODS: Forty patients with refractive error of at least -6.00 diopters were selected for ophthalmologic examination followed by posterior pole photograph and echobiometry. RESULTS: We studied 57 eyes of 37 patients with refractive error ranging from -6.25 to -28.50 diopters, with mean -14.05, and axial length ranging from 26.06 to 32.86 mm, with mean 28.01. We found a temporal crescent in 36.5% and a peripapillary one in 20% of the eyes. Choroidal vessels were seen in 35% of the eyes. Posterior pole changes were as follow: posterior staphyloma in 10.5%, Fuchs' spots in 3.5% and lacquer cracks in 1.5%. Peripheral retinal examination revealed paving stone chorioretinal atrophy in 17.5%, white without pressure in 10.5%, lattice degeneration in 5%, retinal tears in 3.5% and retinoschisis in 1.5% of the examined eyes. CONCLUSIONS: Fundus changes that lead to decreased vision are common in patients with degenerative myopia. Peripheral retinal examination is very important in these patients due to the increased risk of retinal detachment.

Adolescent↗

PubMed2005

[Number, shape, and topography of leakage points in patients with central serous chorioretinopathy].

PURPOSE: To evaluate the number, shape and topography of leakage points in patients with central serous chorioretinopathy (CSC). METHODS: Digital photographic files of fluorescein angiography with the diagnosis of CSC were reviewed by the author. The cases considered in remission and the examinations related to the same episode were excluded. The author filled out a form containing medical record number, initials, sex, age, date of the examination and leakage point characteristics (number, shape, and topography) of the selected cases. RESULTS: The examinations of 418 patients (455 eyes) were included, with a male:female ratio of 2.32:1. Ninety-one point fifteen percent of the patients presented the disease unilaterally and 8.85% bilaterally. The mean age was 43.04 years (range, 19-68 years). Among the 455 selected eyes, 88.35% presented typical forms of CSC while 10.11% decompensation of the retinal pigment epithelium and 1.54% with isolated retinal pigment epithelium (RPE) detachment. The evaluation of typical forms of CSC showed a leakage point with uniform dye spread (inkblot) in 88.81% and 11.19% with a smoke-stack phenomenon. Regarding the leakage points, 46.01% were located in the upper nasal quadrant, 23.27% in the upper temporal quadrant, 19.18% in the lower nasal quadrant, 11.01% in the lower temporal quadrant and 0.53% in the subfoveal area. CONCLUSIONS: In our series men were affected approximately two times more often then women, most of them with a unilateral involvement and in around the fourth decade of life. About 90% of the patients presented the typical forms, with 1 or 2 inkblot points or leakage. The superior nasal quadrant was the most affected. The isolated RPE detachment rarely occurred. Decompensation of RPE affected about 10% of the patients.

Adult↗

PubMed2005

[Congenital retinal macrovessel: case report].

Congenital retinal macrovessel is a rare vascular anomaly in which a large vessel and its tributaries cross the macula. We describe a case of retinal macrovessel in a patient complaining of decrease in visual acuity.

Adult↗

PubMed2005

[Comparative study of the density of corneal endothelial cells after phacoemulsification by the "divide and conquer" and "quick chop" techniques].

PURPOSE: Since one of the most implicated factors in corneal endothelial cell loss after phacoemulsification is the ultrasound time, and that the "quick chop" technique utilizes less ultrasound time, the objective of this study was to compare and analyze the reduction of the central corneal endothelial cell density between the patients submitted to the "divide and conquer" and "quick chop" techniques. METHODS: Fifty-six patients with grade 3 senile cataract were prospectively selected and submitted to endocapsular phacoemulsification by the "divide and conquer" (28 patients, group 1) and "quick chop" (28 patients, group 2) techniques. The non-contact corneal central specular microscopy performed pre- and postoperatively at one month, 3 months and 6 months, and the ultrasound time used for each surgery, were verified. RESULTS: We observed that the "divide and conquer" technique spent an average of 2.0 minutes of ultrasound time and the "quick chop", 1.1 minute; that the reduction of the central corneal endothelial cell density was significant for both techniques in the first postoperative month (16.5% in group 1 and 19.4% in group 2) and that the variations in central corneal endothelial cell density that followed, at the 3rd and 6th month were not significant. There was no statistically significant difference between the variation of the central corneal endothelial cell density that occurred with both techniques (Student's "t" test p=0.334; in the 1st postoperative month). CONCLUSIONS: We concluded that the reduction of central corneal endothelial cell density was not statistically different between the two techniques.

Aged↗

PubMedDate not supplied

[The relationship between the length of ciliary processes as measured by ultrasound biomicroscopy and the duration, localization and severity of uveitis].

PURPOSE: To determine the relationship between the length of ciliary processes as measured by ultrasound biomicroscopy and the duration, localization and severity of uveitis. METHODS: We analyzed in this prospective study, 58 individuals including patients with different stages of uveitis and normal patients (112 eyes including 18 normal), between August 2001 and August 2002, at the Cleveland Clinic Foundation, Ohio, USA. All patients were referred to ultrasound biomicroscopy by the Uveitis Department, after a complete ophthalmological examination. A 50 MHz-transducer UBM model 840 (Zeiss-Humphrey) was used under topical anesthesia and immersion technique. RESULTS: The most frequent etiology was idiophatic uveitis (27.8%). Recurrent, aggressive and diffuse uveitis lead to significant damage of the ciliary processes. The most significant loss of the ciliary processes was found in the inferior quadrant and the highest in normal patients and in the temporal quadrant. Hypotonic eyes have their ciliary processes reduced. CONCLUSIONS: Ultrasound biomicroscopy has proved to be useful in evaluating anatomical changes of ciliary processes in uveitis and in ocular hypotony, and provides a basis to, make recommendations regarding baseline screening of uveitis patients. Patients who are found to have atrophy of the ciliary processes may need a more aggressive treatment for any signs of inflammation to prevent further damage and eventual hypotony.

Adolescent↗