Can a light poke with you finger to the eye cause vision problems?

If no vision problem was apparent right after the poke, you should be safe from any vision problem from the incidnet. For healthy diet: http://www.choosemyplate.gov/., exercise 30 minutes/day, drink enough water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs. Get HPV, Flu and Covid vaccines. Wish you good health!