[1] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5298925/

[2] https://www.nature.com/articles/d41586-021-02629-w

[3] https://medicalxpress.com/news/2020-11-groundbreaking-stem-cell-sight-people.html#:~:text=Eye%20research%20charity%20Fight%20for,degeneration%20and%20juvenile%20macular%20dystrophies.

[4] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3917265/#targetText=The%20natural%20sources%20of%20astaxanthin,Haematococcus%20and%20through%20chemical%20synthesis.

[5] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6696170/

[6] https://www.ncbi.nlm.nih.gov/pubmed/27158842

[7] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4997915/

[8] https://www.ncbi.nlm.nih.gov/pubmed/30309499

[9] https://www.ncbi.nlm.nih.gov/pubmed/15947501

[10] https://www.ncbi.nlm.nih.gov/pubmed/19105587

[11] https://www.macular.org/study-demonstrates-essential-role-zeaxanthin-eye-health

[12] https://iovs.arvojournals.org/article.aspx?articleid=2122959

[13] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5611842/

[14] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6154331/

[15] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4698241/