Orbital tumors constitute a heterogeneous array of lesions and pose numerous challenges in terms of diagnosis, imaging and treatment.1,2 The bony orbit contains an extremely complicated anatomical architecture composed of II, III, IV, VI cranial nerves, vessels, extra ocular muscles and the globe. Schwannoma of cranial nerves represent less than 8% of all intracranial neoplasms usually arising ...

Studies were performed to determine the distribution of hematoporphyrin derivative (HPD) in ocular structures and to characterize long-term damage associated with ocular HPD photodynamic therapy. Pigmented rabbits with an amelanotic melanoma heterotransplanted to the iris were used to obtain quantitative tissue levels of HPD as well as to document HPD localization by fluorescence microscopy. HP...

background and objective: the frequency and pattern of eye neoplasms differ in various geographic areas. our aim was to determine the distribution of patient age, gender, ocular tumor origin, location and histological type in our region. materials and methods: in this cross-sectional study, all of the 384 eye globe enucleation cases carried out during a 10-year period in farabi medical center i...

purpose: controversy has recently risen about the presence of compensatory ocular countertorsion (coct) after head tilt. this study was performed to define the functional range of this phenomenon. methods: cycloplegic autorefraction was performed on 80 eyes with regular astigmatism 2d. objective autorefraction was performed in normal position, right and left head tilt positions of 5º, 10º, 15º,...

The choroid is the vascular layer that supplies the outer retina and is involved in the pathogenesis of several ocular conditions including choroidal tumors, age related macular degeneration, central serous chorioretinopathy, diabetic retinopathy, and uveitis. Nevertheless, difficulties in the visualization of the choroid have limited our understanding of its exact role in ocular pathology. Enh...

Paclitaxel (PTX) and/or cisplatin (CDDP), as important cytotoxic anti-cancer agents, are widely used to treat various solid tumors. Both may cause moderate or severe neurotoxicity, but ocular neurotoxicity is also occasionally reported. A patient diagnosed with nasopharyngeal cancer suffering acute ocular neurotoxicity 10 days after paclitaxel and CDDP administration at the recommended dose is ...