this descriptive study was conducted to determine the prevalence of asthma and related symptoms among 6-7 and 13-14 year old school children in tehran as a part of international study of asthma and allergies in childhood (isaac) phase iii. the isaac written questionnaire was given to a total of 6127 students of 72 schools in urban area of tehran. simple random sampling was performed with a unif...

Diabetic retinopathy and maculopathy usually develop and progress without symptoms. Fundus screening is mandatory, since only advanced stages cause symptoms. Signs and symptoms that suggest the development of retinopathy are: ▶ sudden drop of visual acuity ▶ non-correctable drop of visual acuity If the macula is affected: ▶ impaired vision ▶ impaired colour vision ▶ blurred vision ▶ “floaters” ...

purpose: to report a case of capsular bag distension syndrome (cbds) with solid material presenting eight years after cataract surgery. case report: a 58-years-old female who underwent an uneventful clear-cornea phacoemulsification with in-the-bag intraocular lens (iol) implantation in the right eye, presented with a chief complaint of blurred vision (va: 20/200) and cobweb like matter appearin...

Visual search within a head-fixed display consisting of a 12 X 12 digit matrix is degraded by whole-body angular oscillation at 0.02 Hz (+/- 155 degrees/s peak velocity), and signs and symptoms of motion sickness are prominent in a number of individuals within a 5-min exposure. Exposure to 2.5 Hz (+/- 20 degrees/s peak velocity) produces equivalent degradation of the visual search task, but doe...

Abstract Stroke-like migraine attacks after radiation therapy (SMART) syndrome is a rare neurological phenomenon characterized by reversible symptoms of headache, seizure, hemiparesis, and visual changes associated with remote history cranial irradiation. We describe case medulloblastoma survivor, presenting postoperative deficits, along neuroimaging findings subsequent resolution symptoms, hig...

A 63 year old man with central nervous system lupus with a neurogenic bladder and visual disturbance is described. The diagnosis of neurogenic bladder, attributed to peripheral neuropathy, was made on the basis of cystometrography and clinical symptoms. A brain magnetic resonance imaging scan showed gliosis along the cerebral vessels and the optic nerve. This case shows that systemic lupus eryt...

Migraine aura without headache should be considered as a diagnosis in anyone who has recurrent episodes of transient symptoms, especially those that are visual or neurological or involve vertigo. Visual and neurological symptoms due to migraine are not unusual and most commonly occur in older persons with a history of migraine headaches. Migraine aura without headache should be diagnosed only w...

Migraine is one of the most common neurological disorders. In addition to severe headaches, non-headache symptoms associated with migraine attacks as well as co-morbid disorders frequently aggravate the disabling of migraine patients. Some of these symptoms are related to poor outcomes. In this review, we update the advances of studies on certain non-headache symptoms, including visual disturba...

A 15-year-old girl with right tibial osteosarcoma, diagnosed 22 months previously, developed right orbital and skull base metastases, with symptoms including painful protrusion of the right eyeball and severe visual impairment. She underwent embolization of the metastatic tumor, local irradiation, and chemotherapy followed by intralesional resection of the mass because extensive involvement of ...

Visual perceptual disorders are often presented as a disparate group of neurological deficits with little consideration given to the wide range of visual symptoms found in psychiatric and neurodevelopmental disease. Here, the authors attempt a functional anatomical classification of all disorders linked to visual perception, whatever the clinical context in which they arise, including those dis...