The hormone melatonin is present in the eye.
Melatonin in Ocular Tissues
Based on research, melatonin is not only produced by the pineal gland but also within the eye itself. Key points include:
- Production Sites: Melatonin is synthesized and secreted not only by the pineal gland but also by the retina and other peripheral organs.
- Enzymatic Activity: The presence of seratonin N-acetyl transferase (NAT), an enzyme crucial for melatonin synthesis, is also detected in specific areas of the eye.
- Local Production: This indicates that the eye has its own capacity to produce melatonin, which plays a role in various ocular functions.
Functions of Melatonin in the Eye
Melatonin plays a crucial role in several eye functions:
- Antioxidant Properties: Acts as a powerful antioxidant, protecting the retina from oxidative stress.
- Circadian Rhythm Regulation: Contributes to the regulation of the eye's internal clock, influencing visual function.
- Neuroprotection: Provides neuroprotective effects, safeguarding retinal neurons from damage.
Summary
| Hormone | Presence in Eye | Key Function |
|---|---|---|
| Melatonin | Yes | Antioxidant, Rhythm regulator |
