The Experts below are selected from a list of 21 Experts worldwide ranked by ideXlab platform

Jorge Patino - One of the best experts on this subject based on the ideXlab platform.

  • teaching video neuroimages Marcus Gunn Pupil in tuberous sclerosis
    Neurology, 2018
    Co-Authors: Jaime Toro, Jorge Patino
    Abstract:

    A 22-year-old woman with tuberous sclerosis (TS) and an incomplete resection of a left-sided astrocytoma presented with a 4-year history of visual deterioration. Neurologic examination revealed a left relative afferent Pupillary defect (RAPD) (video) with a pale left optic disc. Visual acuity was 20/100 bilaterally and a left-sided superior visual field loss was seen. Optical coherence tomography showed a left retinal hamartoma (figure 1). Contrast-enhanced brain MRI showed bilateral cortical and subcortical tubers (figure 2). Marcus-Gunn Pupil or RAPD is a nonspecific feature denoting optic neuropathy.1 TS ophthalmopathy includes retinal and iris hamartomas, choroid colobomas, and hypopigmented lesions on iris and ciliary body.2

Jaime Toro - One of the best experts on this subject based on the ideXlab platform.

  • teaching video neuroimages Marcus Gunn Pupil in tuberous sclerosis
    Neurology, 2018
    Co-Authors: Jaime Toro, Jorge Patino
    Abstract:

    A 22-year-old woman with tuberous sclerosis (TS) and an incomplete resection of a left-sided astrocytoma presented with a 4-year history of visual deterioration. Neurologic examination revealed a left relative afferent Pupillary defect (RAPD) (video) with a pale left optic disc. Visual acuity was 20/100 bilaterally and a left-sided superior visual field loss was seen. Optical coherence tomography showed a left retinal hamartoma (figure 1). Contrast-enhanced brain MRI showed bilateral cortical and subcortical tubers (figure 2). Marcus-Gunn Pupil or RAPD is a nonspecific feature denoting optic neuropathy.1 TS ophthalmopathy includes retinal and iris hamartomas, choroid colobomas, and hypopigmented lesions on iris and ciliary body.2

Koushik Tripathy - One of the best experts on this subject based on the ideXlab platform.

  • Marcus Gunn Pupil
    StatPearls, 2021
    Co-Authors: Sriram Simakurthy, Koushik Tripathy
    Abstract:

    Marcus Gunn Pupil (MGP) is the term given to an abnormal Pupil showing aberrant Pupillary response in certain ocular disorders. In literature, the term is often used synonymously with Marcus Gunn phenomenon or relative afferent Pupillary defect (RAPD). After exposure to bright light, a normal Pupil constricts.A Marcus Gunn Pupil, on the other hand, has a relative weakness of the afferent limb of the Pupillary light reflex compared to the other eye because of which when light is rapidly transferred from the normal eye to the eye with MGP, the MGP dilates instead of constricting. It is named after Scottish Ophthalmologist Robert Marcus Gunn. Hirschberg first noted this phenomenon in the case of unilateral retrobulbar optic neuritis. The presence of a relative afferent Pupil defect (RAPD) is the hallmark of a unilateral afferent sensory abnormality or bilateral asymmetric visual loss.An afferent Pupillary response is characterized by: Constriction of Pupils of both eyes when the light stimulus is applied to the normal eye 2. Dilatation of Pupils of both eyes when the light stimulus is rapidly transferred from the normal eye (after brief light exposure to the normal eye) to the affected eye.

Sriram Simakurthy - One of the best experts on this subject based on the ideXlab platform.

  • Marcus Gunn Pupil
    StatPearls, 2021
    Co-Authors: Sriram Simakurthy, Koushik Tripathy
    Abstract:

    Marcus Gunn Pupil (MGP) is the term given to an abnormal Pupil showing aberrant Pupillary response in certain ocular disorders. In literature, the term is often used synonymously with Marcus Gunn phenomenon or relative afferent Pupillary defect (RAPD). After exposure to bright light, a normal Pupil constricts.A Marcus Gunn Pupil, on the other hand, has a relative weakness of the afferent limb of the Pupillary light reflex compared to the other eye because of which when light is rapidly transferred from the normal eye to the eye with MGP, the MGP dilates instead of constricting. It is named after Scottish Ophthalmologist Robert Marcus Gunn. Hirschberg first noted this phenomenon in the case of unilateral retrobulbar optic neuritis. The presence of a relative afferent Pupil defect (RAPD) is the hallmark of a unilateral afferent sensory abnormality or bilateral asymmetric visual loss.An afferent Pupillary response is characterized by: Constriction of Pupils of both eyes when the light stimulus is applied to the normal eye 2. Dilatation of Pupils of both eyes when the light stimulus is rapidly transferred from the normal eye (after brief light exposure to the normal eye) to the affected eye.

A. Simanjuntak M. Golda - One of the best experts on this subject based on the ideXlab platform.

  • Retrobulber Neuritis Post Nephrectomy
    'UKI Press', 2014
    Co-Authors: W. Simanjuntak S. Gilbert, Natali C. Reinne, A. Simanjuntak M. Golda
    Abstract:

    Abstract A 52 years old lady was referred due to a sudden decrease of vision. She underwent nephrectomy two days before being admitted to the Department of Ophthalmology. The examination showed that the right eye visual acuity was 1/60, left eye 20/70, ascertained with Marcus Gunn Pupil reflex. Electroretinography examination revealed a retrobulber optic nerve disorder, diagnosed as neuritis. She received medication of methylprednisolone injection, followed by oral. On the last examination right eye visual acuity was 4/60, left eye 20/30 with S +0,50, and no more inflammation.Keywords: retrobulbar neuritis, nephrectomy, complication Abstrak Seorang perempuan berusia 52 tahun datang dengan keluhan tajam penglihatan turun mendadak. Penderita mengalami nefrektomi dua hari sebelumnya, dan kemudian dirujuk ke Departemen Penyakit Mata. Pada pemeriksaan ditemukan visus mata kanan 1/60 dan visus mata kiri 20/70 yang disertai refleks Pupil Marcus Gunn. Pemeriksaan elektroretinografi memperlihatkan hasil gangguan di nervus optikus retrobulber. Pasien dengan neuritis retrobulber diterapi dengan injeksi metilprednisolon, dilanjutkan pemberian oral. Pada pemeriksaan terakhir didapatkan visus mata kanan 4/60 dan mata kiri 20/30 dengan S +0,50, dan tidak ditemukan lagi tanda peradangan.Kata kunci: neuritis retrobulber, nefrektomi, komplikas