Conclusion
The berry known as the bilberry is indigenous to Canada, northern Europe, Asia, and the United States. Both in supplement form and as food, it is available. Bilberry supplements are promoted as treatments for a number of ailments. None of these uses, however, are sufficiently supported by research.
Even while bilberries shouldn’t be used in place of normal medical care or as a preventative measure for any illness, eating more bilberries (or other anthocyanin-rich fruit) may occasionally have some protective advantages.
If you believe bilberry would be beneficial for you, discuss the advantages and disadvantages of using a supplement like this with your doctor.
References;
[1] https://www.mayoclinic.org/diseases-conditions/dry-eyes/symptoms-causes/syc-20371863
[2] https://www.mayoclinic.org/diseases-conditions/glaucoma/symptoms-causes/syc-20372839
[3] https://www.mayoclinic.org/diseases-conditions/cataracts/symptoms-causes/syc-20353790
[4] https://my.clevelandclinic.org/health/diseases/17429-retinitis-pigmentosa
[5] https://www.heart.org/en/health-topics/cholesterol/about-cholesterol
[6] https://my.clevelandclinic.org/health/diagnostics/23056-c-reactive-protein-crp-test
[7] https://my.clevelandclinic.org/health/symptoms/8106-nausea–vomiting