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38 Possible Causes for Night Blindness by Age 20 Years

  • Retinitis Pigmentosa

    The index patient reported night blindness since the age of 20 years, followed by moderate disease progression with decrease of peripheral vision, the development of photophobia[ncbi.nlm.nih.gov]

  • Retinitis Pigmentosa
  • Brachydactyly

    Night blindness is a feature although the age of onset is unknown.[disorders.eyes.arizona.edu] Visual acuity is decreased in the first decade but at least one patient at age 40 years still had vision of 20/40-20/50.[disorders.eyes.arizona.edu]

  • Retinitis

    The age of onset is varied preferably between 25-40 years to develop.[barraquer.com] Symptoms Retinitis pigmentosa (RP) appears quietly and slowly, so usually, affected do people not go to the ophthalmologist until about 15 years after the onset of night blindness[barraquer.com] Cases occur in children under 20 years and, less frequently, cases in which the disease begins to show its symptoms past 50 years.[barraquer.com]

  • Retinitis pigmentosa 40

    The age of onset is varied preferably between 25-40 years to develop.[barraquer.com] Symptoms include night blindness, the development of tunnel vision, and slowly progressive decreased central vision starting at approximately 20 years of age.[snpedia.com] Symptoms Retinitis pigmentosa (RP) appears quietly and slowly, so usually, affected do people not go to the ophthalmologist until about 15 years after the onset of night blindness[barraquer.com]

  • Retinitis Pigmentosa 41

    Symptoms include night blindness, the development of tunnel vision, and slowly progressive decreased central vision starting at approximately 20 years of age.[flybase.org]

  • Retinitis Pigmentosa 11

    Symptoms include night blindness, the development of tunnel vision, and slowly progressive decreased central vision starting at approximately 20 years of age.[flybase.org]

  • Vitreoretinal Degeneration

    Some patients have early onset (2-4 years old) night blindness and progress to total blindness before 20 years of age.[disorders.eyes.arizona.edu]

  • Retinitis Pigmentosa 30

    Symptoms include night blindness, the development of tunnel vision, and slowly progressive decreased central vision starting at approximately 20 years of age.[snpedia.com] At a minimum, these SNPs are known to be related, and others may also be Retinitis pigmentosa (RP) is a degenerative disease which can cause vision impairment or blindness[snpedia.com]

  • Usher Syndrome Type 1J

    Hearing problems are noticed by the teenage years and they become deaf by mid-to-late adulthood. Night blindness starts around puberty.[patient.info] Blind spots appear in the late teens or early 20s. By middle age they are usually blind.[patient.info]

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