Gac (Momordica cochinchinensis) is a Southeast Asian fruit that has gained attention for its high content of carotenoids, particularly beta-carotene and lycopene. These nutrients are known for their antioxidant properties and their role in supporting eye health, particularly in maintaining healthy vision and potentially reducing the risk of age-related macular degeneration (AMD). Several scientific studies have analyzed the nutrient composition of Gac fruit and noted that it contains significantly higher levels of beta-carotene than carrots and lycopene than tomatoes, making it a potent dietary source of these compounds.

Research published in peer-reviewed journals indicates that carotenoids like beta-carotene are precursors to vitamin A, which is essential for the proper functioning of the retina and overall eye health. While direct clinical trials on Gac fruit and visual outcomes in humans are limited, animal studies and in vitro analyses support the bioavailability and efficacy of its carotenoids. Additionally, traditional uses in Southeast Asia have included Gac in diets for general health, though its specific association with eye health is largely derived from its nutrient profile rather than long-standing folk usage.

In summary, there is scientific rationale and emerging evidence for the use of Gac to support the eyes, based on its exceptional carotenoid content, though more direct clinical research is needed to further validate these benefits in human populations.