Zinc

1. Office of Dietary Supplements - Zinc. (n.d.).
   https://ods.od.nih.gov/factsheets/Zinc-Consumer/
2. Nih Study Provides Clarity on Supplements For Protection Against Blinding Eye Disease
   https://www.nih.gov/news-events/news-releases/nih-study-provides-clarity-supplements-protection-against-blinding-eye-disease

Vitamin A

1. A Randomized, Placebo-controlled, Clinical Trial Of High-dose Supplementation with Vitamins C and E, Beta Carotene, and Zinc For Age-related Macular Degeneration and Vision Loss: Areds Report No. 8, Age-Related Eye Disease Study Research Group
   https://www.ncbi.nlm.nih.gov/pubmed/11594942
2. A Combination Of Zinc and Vitamin A May Restore Night Vision in Pregnant Nepalese Women, EurekAlertAAAS
   https://www.eurekalert.org/pub_releases/2001-05/AJoC-Acoz-2905101.php

Lutein

1. A Randomised Controlled Trial Investigating the Effect Of Nutritional Supplementation on Visual Function in Normal, and Age-related Macular Disease Affected Eyes: Design and Methodology [isrctn78467674], Hannah Bartlett-Frank Eperjesi
   https://www.ncbi.nlm.nih.gov/pmc/articles/PMC240108/
2. Age-related Eye Disease Study 2 (areds2) - Study Results
   https://clinicaltrials.gov/ct2/show/results/NCT00345176

Bilberry

1. Effect Of Fermented Bilberry Extracts on Visual Outcomes in Eyes with Myopia: a Prospective, Randomized, Placebo-controlled Study, Kazutaka Kamiya-Hidenaga Kobashi-Kazuko Fujiwara-Wakako Ando-Kimiya Shimizu
   https://www.ncbi.nlm.nih.gov/pubmed/23113643
2. Bilberry Supplement: Benefits, Uses, Side Effects, Dosage & Interactions
   https://www.medicinenet.com/bilberry/supplements-vitamins.htm

Grape Seed

1. 10 Benefits Of Grape Seed Extract, Based on Science
   https://www.healthline.com/nutrition/grape-seed-extract-benefits
2. Grape Seed Extract: Benefits and Side Effects, Melinda Ratini
   http://webmd.com/diet/grape-seed-extract

Quercetin

1. Quercetin Protects the Retina By Reducing Apoptosis Due To Ischemia-reperfusion Injury in a Rat Model, Sedat Arikan-Ismail Ersan-Turan Karaca-Selcuk Kara-Baran Gencer-Ihsan Karaboga-Tufan Hasan Ali
   https://www.ncbi.nlm.nih.gov/pubmed/25945531
2. Suppression Of Light-induced Retinal Degeneration By Quercetin Via the Ap-1 Pathway in Rats, Koyama- Yasurou- Sachiko- Kim- Yong-Chul- Matsuoka- Yotaro- Ishihara- Ohira- Akihiro- Masaki
   https://www.mdpi.com/2076-3921/8/4/79/htm

L-Taurine

1. Review: Taurine: a "very Essential" Amino Acid, Harris Ripps-Wen Shen
   https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3501277/
2. Amino Acid Taurine Deficiency Is Damages Your Vision, Author Marc_Grossman
   https://www.naturaleyecare.com/blog/amino-acid-taurine-vision/

Lycopene

1. Nutrition For Your Eyes, Gary Heiting
   https://www.allaboutvision.com/teens/nutrition.htm
2. Lycopene's Effects on Health and Diseases, V. Selvan-Kalai Selvan-V. Selvan
   https://www.naturalmedicinejournal.com/journal/2011-03/lycopenes-effects-health-and-diseases