This paper reviews a number of behavioral, neuropsychological and neuroimaging studies that bea the question of whether and how visual disorders of peripheral or central origin lead to disorder mental imagery capacity. The review of the literature suggests that in cases of blindness of periph origin lack of vision can progressively lead to representational disorders. However, in patients suffe ...

to improve visual disturbance, optic nerve decompression can be performed via transcranial or tran-sphenoidal approaches. although the surgical exposure in transcranial approach is favourable, yet the optic nerve's presence in the field may make it vulnerable to damage. of fighty patients with different types of pituitary adenomas, 35 cases with medium-sized (1-3 cm) tumors have been studi...

The human visual system is made up of an exquisitely organised array of functional units which have been the subject of investigation by many disciplines, including those of optics, electrophysiology, neurophysiology, psychology, and in the realm of cognate vision, philosophy. The nature of image degradation, resulting from pathology of the eye or anterior visual pathways, is not difficult to i...

Objectives: To report a case of somatoform disorder (not otherwise specified-NOS). Methods: The patient was an eight-year-old boy who complained of anxiety and seeing visual hallucinations of colorful shapes. He was administered ant migraine and antiepileptic drugs. However, no changes were observed. Psychotherapy was started, as well as fluoxetine (20 mg per day). Initial assessments includ...

Introduction: The decline of visual function with increasing age is a significant concern in elderly. Despite previous work on prevalence of specific ophthalmic pathologies, there has not been enough valid data about overall eye disorders in Tehran yet, and it is poorly defined and not underpinned by strong evidence. The purpose of this study was to investigate the common eye disorders in the e...

The paper focuses on the question of what the (visual) perceptual differences are between individuals with autism spectrum disorders (ASD) and typically developing (TD) individuals. We argue against the view that autistic subjects have a deficiency in the most basic form of perceptual consciousness-namely, phenomenal consciousness. Instead, we maintain, the perceptual atypicality of individuals...

Following stroke or other causes of brain damage, patients may demonstrate visual disorders of higher cortical function. These defects involve visual attention, oculomotor skills, visuospatial orientation and object recognition. It is important for optometrists to understand these conditions and consider their presence in individuals with persistent visual complaints despite a normal exam, or i...