1,725,671 research outputs found
Psychogenic Non-Epileptic Seizure in a Child Following Electrophysiology Examination of the Eyes
Full text linkAn eleven-year-old boy suffering from retinitis pigmentosa, deafness, and aphasia was referred to Basir Eye Clinic, Tehran, Iran, for visual evoked potential (VEP) and electroretinography (ERG) recordings. He left the laboratory on foot, but after fifteen minutes, he suffered a seizure. The condition was managed, and the diagnosis of a psychogenic non-epileptic seizure was reached
Acute Mental Stress as a Precipitating Factor for Central Retinal Vein Occlusion in an Elderly Patient
Full text linkA 59-year-old male patient was referred to Basir Eye Clinic, Tehran, Iran, for visual evoked potential (VEP) and electroretinography (ERG) of the left eye. The results showed a flat VEP P100 peak and a flat ERG b-wave. Further investigation into the cause of this sudden episode revealed central retinal vein occlusion, which was attributed to acute mental stress
Visual Evoked Potential Findings in a Vitiligo Patient
Full text linkA 45-year-old man was referred to the Basir Eye Clinic in Tehran, Iran, for a visual evoked potential (VEP) assessment due to complaints of blurred vision in his left eye. His condition remained untreated because of his corticosteroid phobia, despite medical recommendations. VEP results revealed a delay of VEP P100 peak in both eyes, indicating optic nerve involvement, a finding observed in some patients with this condition
Diplopia and Flashes of Light Sensation in a Patient with Fragrance Allergy
Full text linkPerfume allergy or perfume intolerance is a rare condition wherein people exhibit sensitivity or allergic reaction to ingredients in some perfumes and other fragrances. A 36-year-old female with fragrance allergy complaining of diplopia and flashes of light sensation was referred to Basir Eye Center for possible visual pathway disturbances. Hence we report the patient's visual evoked potential and magnetic resonance imaging
Self-withdrawal of Levetiracetam in a Patient with Epilepsy Leading to Blindness
Full text linkA 27-year-old female patient was referred to Basir Eye Clinic in Tehran, Iran, following sudden total blindness in both eyes. She had a history of receiving various medications for different illnesses, including epilepsy. She reported sudden self-withdrawal of Levetiracetam. Within one week after discontinuing the medication, she completely lost vision in both eyes. A complete examination of the patient including visual evoked potential examination led to a diagnosis of cortical blindness
Blurred Vision in a Patient Suffering from Endometriosis and Epilepsy
Full text linkA 25-year-old lady was referred to Basir eye clinic for the visual evoked potential examination. Her medical history showed she had endometriosis and epilepsy, for which she used dienogest and carbamazepine. Certain drugs produce visual disturbances, which can be diagnosed based on the visual evoked potential examination
Central Retinal Vein Occlusion Caused by Antipsychotic Drugs: A Case Report
Full text linkA forty-one-year-old man suffering from schizophrenia was referred to Basir Eye Clinic, Tehran, Iran, for visual evoked potential (VEP) testing. His right eye was totally blind, whereas his left eye was barely able to distinguish light. The VEP P100 peak was absent in both eyes. A full workup of the patient revealed that he suffered from central retinal vein occlusion due to antipsychotic drugs
Diplopia and Blurry Vision Following Refractive Eye Surgery: a Comorbidity Case Report
Full text linkRefractive eye surgery is a safe technique as far as visual pathway is concerned. A 39-year patientComplains from diplopia & blurring vision on his second refractive surgery attempt, was referred tovisual electrophysiology diagnostic Laboratory of Basir clinic for possible visual pathway disorder.this report explains the visual evoked findings and magnetics resonance imaging of the Patientwhich indicated a comorbidity of refractive and visual pathway disorders. However, at first glance itconsidered as side effect of surger
Electrophysiological Eye Examination of a Patient Suffering from Tuberous Sclerosis and Probable Retinal Dystrophy
Full text linkA twelve-year-old girl suffering from tuberous sclerosis complex was referred to Basir Eye Clinic, Tehran, Iran, for electrophysiological eye examinations, including visual evoked potential (VEP) and electroretinography (ERG). The patient's medical history showed that she experienced seizures at the age of ten, for which treatment with vigabatrin was initiated. Her field of vision was abnormal, potentially due to the side effects of vigabatrin. The ERG results were also abnormal
Visual Loss Following Cranial Radiotherapy to Treat a Pituitary Tumor
Full text linkA patient was referred to the Basir Eye Clinic in Tehran, Iran, for a visual evoked potential exam. He was a 35-year-old man with light perception (LP) in his right eye and no light perception (NLP) in his left eye. The patient's history indicated that he underwent adenomectomy and cranial radiotherapy to treat a pituitary tumor. Six months after radiotherapy, he lost his vision. The patient was diagnosed with radiation-induced optic neuropathy leading to blindness
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