purpose : to report a case of congenital macular macrovessels case report : an 8-year-old girl was referred for decreased vision in her right eye. her best corrected visual acuity (bcva) in the right eye was 20/200 and in the left eye 20/20. anterior segment examinations were normal in both eyes. posterior segment examination of the right eye showed abnormal macrovessels crossing the macula and...

We have recently had the opportunity to determine some visual functions of a unilaterally color-blind person, that is, one who demonstrates some form of color blindness in one eye and normal (trichromatic) vision in the other. The fact that a condition of unilateral color blindness can exist has been known since 1879.1 Cases of unilateral color blindness have been historically important, for it...

Purpose: To report a case of posterior keratoconus with atypical ocular findings Case report: An 8-year-old boy was referred to our clinic with the chief complaint of blurred vision in his right eye. The patient had no history prior ocular surgery of trauma. Her family history was also unremarkable. Comprehensive ocular examination was performed. Results: The patient's best spectacle corrected ...

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...

Detection of basic differentiating characteristics of eye diseases from the images of the retina can be a good approach as a low-cost method for broad-based initial screening. For example early diabetic retinopathy detection enables application of laser therapy treatment in order to prevent or delay loss of vision. The paper has referenced Diabetic retinopathy and Retinitis pigmentosa for analy...

PURPOSE The purpose of this study was to assess the effect of fixation target parameters on fixation instability in strabismic monkeys. METHODS One normal and three exotropic monkeys were presented with four differently shaped fixation targets, with three diameters, during monocular or binocular viewing. Fixation targets were white on a black background or vice versa. Binocular eye movements ...

Eye development in both invertebrates and vertebrates is regulated by a network of highly conserved transcription factors. However, it is not known what controls the expression of these factors to regulate early eye formation and whether transmembrane signaling events are involved. Here we establish a role for signaling via a member of the frizzled family of receptors in regulating early eye de...