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6 Possible Causes for Electroretinogram Responses Decreased or Absent, Scant Bone Spicule Pigment

  • Leber Congenital Amaurosis Typ 14

    David W. Stockton Richard Alan Lewis Emad B. Abboud A. Al-Rajhi Monzer Jabak Kent L. Anderson J. R. Lupski Original Investigation First Online: 17 February 2014 Abstract Leber congenital amaurosis (LCA) is a clinically and genetically heterogeneous autosomal recessive retinal dystrophy and the most common genetic[…][link.springer.com]

  • Degenerative Brain Disorder

    Usually normal ERG Normal Abnormal EEG electroencephalogram, EMG electomyography , VEP visual evoked potential, ABR auditory brain stem response, ERG electroretinogram 12[slideshare.net] .  Gray matter: fits, decrease HMF  EEG: early abnormality  MRI Brain: cortical atrophy  White matter: blindness ,Gait disturbances ,Motor signs- Spasticity ,optic atrophy[slideshare.net] […] atrophy Retinal degeneration EEG Diffuse delta slowing Epileptic form discharges EMG Slowed nerve conduction velocity Usually normal Evoked potentials (VEP, ABR) Prolonged or absent[slideshare.net]

    Missing: Scant Bone Spicule Pigment
  • Pigmented Paravenous Retinochoroidal Atrophy

    Pigmented paravenous retinochoroidal atrophy is an ocular disease characterized by outer retina and choroidal atrophy often with overlying intraretinal bone spicule pigment[ncbi.nlm.nih.gov] […] paravenous retinochoroidal atrophy is an ocular disease characterized by outer retina and choroidal atrophy often with overlying intraretinal bone spicule pigment deposition[text-br.123dok.com] As a rare condition, there is scant information in the literature regarding the pattern of inner retinal layers involvement.[ncbi.nlm.nih.gov]

    Missing: Electroretinogram Responses Decreased or Absent
  • Oguchi Disease Type 2

    The A- and b-waves on single flash electroretinograms (ERG) are decreased or absent under lighted conditions but increase after prolonged dark adaptation.[en.wikipedia.org] Electroretinographic studies Oguchi's disease is unique in its electroretinographic responses in the light- and dark-adapted conditions.[ipfs.io] Oguchi's disease is unique in its electroretinographic responses in the light- and dark-adapted conditions.[en.wikipedia.org]

    Missing: Scant Bone Spicule Pigment
  • Acquired Kinky Hair Syndrome

    Usually normal ERG Normal Abnormal EEG electroencephalogram, EMG electomyography, VEP visual evoked potential, ABR auditory brain stem response, ERG electroretinogram Classification[authorstream.com] : Gray matter : fits, decrease HMF EEG: early abnormality MRI Brain: cortical atrophy White matter : blindness ,Gait disturbances ,Motor signs-Spasticity ,optic atrophy ,ataxia[authorstream.com] […] atrophy Retinal degeneration EEG Diffuse delta slowing Epileptic form discharges EMG Slowed nerve conduction velocity Usually normal Evoked potentials (VEP, ABR) Prolonged or absent[authorstream.com]

    Missing: Scant Bone Spicule Pigment
  • Retinal Cone Dystrophy Type 1

    The affected males presented with progressive decrease of visual acuity, impairment of colour vision, and deterioration of electroretinogram, which ranged from absent response[ncbi.nlm.nih.gov]

    Missing: Scant Bone Spicule Pigment

Further symptoms