This study is talking about the forms of Vitamin A that can’t cause any problem with “excess.”
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I read the entire article at medicalxpress.com and didn’t find any mention of forms of vitamin a.
It also specifically stated the items I put into the first comment of analogues “lutein, meso-zeaxanthin, and zeaxanthin” as greatly reduced, along with the reference for food-based amounts of Vitamin A, of which nearly all food forms have Vitamin A in beta-carotene form, except for organ meats. Milk products have it from supplementation, as do breakfast cereals, and that form is the active form (not beta-carotene).
Hope that helps.