NAD+ plays a role in maintaining eye health. Here’s what the research shows.

NAD+’s Role in Eye Health

1. Retinal Function

The retina is one of the most metabolically active tissues. NAD+ supports:

  • Photoreceptor function
  • Retinal energy metabolism
  • Light signal processing

2. Protection from Light Damage

NAD+-dependent enzymes protect against:

  • UV damage
  • Blue light damage
  • Oxidative stress in retinal cells

NAD+ levels decline with age in retinal cells, contributing to:

  • Age-related macular degeneration
  • Reduced visual acuity
  • Retinal degeneration

Research Findings

Animal Studies

2020 (Cell Reports):

  • NMN protected retinal cells from damage in mice
  • Improved visual function
  • Enhanced mitochondrial health in retinal cells

Human Studies

2021 (Journals of Gerontology):

  • 670nm red light (which interacts with NAD+ pathways) improved visual function
  • Enhanced color contrast sensitivity
  • Effects lasted up to one week

Practical Implications

For Eye Health Support

  • NMN 500mg daily may support retinal health
  • Combine with lutein and zeaxanthin
  • Protect eyes from UV and blue light

Important Notes

  • Research is still early
  • Human studies are limited
  • NAD+ supplements are not a replacement for eye care