A hypothetical circadian‒endocrine pathway linking melanopsin-expressing ipRGC dysfunction in autoimmune retinopathy to sexual dysfunction

Apr 8, 2026International ophthalmology

A possible daily hormone pathway linking damage to light-sensitive eye cells in autoimmune eye disease to sexual problems

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Abstract

Autoimmune Retinopathy (AIR) may affect circadian rhythms and sexual function through immune-mediated damage to specific retinal cells.

  • Circulating autoantibodies in AIR target retinal antigens, leading to retinal degeneration.
  • Retinal ganglion cells, including melanopsin-expressing intrinsically photosensitive retinal ganglion cells (ipRGCs), may be involved in broader retinal dysfunction in AIR.
  • ipRGCs are crucial for regulating circadian rhythms and neuroendocrine functions.
  • Dysfunction in the ipRGC pathway has been linked to conditions like glaucoma and diabetic retinopathy, which share mechanisms with AIR.
  • Disruption of circadian rhythms could influence testosterone secretion, melatonin production, and nitric oxide signaling, potentially contributing to erectile dysfunction.

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