In primate striate cortex, geniculocortical afferents in layer IVc terminate in parallel stripes called ocular dominance columns. We propose that this segregation of ocular inputs generates a related but distinct columnar system of monocular core zones alternating with binocular border strips. Evidence for this functional parcellation was obtained by comparing the effects of enucleation, eyelid...

The retinoblastoma is the most frequent malign tumor of the children, starting with the maximum frequency between the ages of one to three years. It is part of the categories of rare diseases, whose frequency is estimated at 1:15.000-1:20.000 newborn babies. It is a tumor of the neuroblast-type placed at the retina level. The retinoblastoma can be unifocal, when a single tumor is present, or mu...

conclusions in conclusion, we recommend that laparoscopic spleen preserving procedures should be preferred for hydatid spleen when conditions are favorable and enough precautions are taken to prevent spillage. we suggest the use of aspirator for giving the scolicidal agent and favor the albendazole as an adjuvant therapy to prevent its recurrence. introduction cystic lesions of spleen are rare....

The coral derived hydroxyapatite sphere is a popular, integrated orbital implant designed to provide improved motility of the ocular prosthesis following enucleation. Although the implant has rapidly become widely used by ophthalmologists, little information is available regarding the problems of this technique in a large series of cases. Experience with 250 consecutive cases of hydroxyapatite ...

PURPOSE To date, the parameters for evaluating enucleation efficiency have only considered enucleation time, although operators simultaneously consume both time and energy during holmium laser enucleation of the prostate. This study was undertaken to find a better way of assessing enucleation skills, considering both enucleation time and consumed energy. MATERIALS AND METHODS One hundred (n=1...

purpose : retinoblastoma (rb) is a relatively common childhood tumor. in this report we discuss the clinical characteristics, treatments and outcome of the treated rb patients from a referral center in iran in order to understand this medical problem in our society. methods : a retrospective study was carried out on rb cases treated in farabi eye hospital since 1979 to 2007. the variables analy...

PURPOSE To evaluate the quality of the corneas processed by Sorocaba Eye Bank (BOS) - SP and transplanted out of the Ophthalmology Hospital of Sorocaba (HOS), as well as the corneas that had re-entered in the BOS, being transplanted or not in the HOS, during the year of 2007. METHODS Ophthalmologists that transplanted corneas processed by BOS outside of the Ophthalmology Hospital of Sorocaba ...

To describe a patient with unilateral metastatic choroidal gastric adenocarcinoma as a first sign of systemic dissemination. A 54-year-old woman presented with a 7-month history of progressive pain and decrease in vision in her left eye. She had undergone total gastrectomy due to gastric adenocarcinoma two years previously. Examination of the left eye revealed an elevated creamy yellow choroida...

A healthy 12 month old infant without significant medical history presented with left eye redness for one week. Ophthalmic examination showed elevated intraocular pressure with iris neovascularization in the affected eye with increased optic nerve cupping. Scleral depression revealed a ciliary body mass in the supratemporal quadrant. A large, non-pigmented, vascular mass was noted; biopsy resul...