This compound can help eye cells survive short-term oxygen loss, but loses its power if the stress lasts too long.

At the right dose, this compound can reduce harmful stress molecules in eye cells—but only if given right after the stress starts, not later.

This compound helps eye cells make more of a natural 'clean-up' enzyme that fights harmful chemicals, but only if given early after stress begins.

This compound helps eye cells fight stress for a few hours, but after a full day, it stops working—so it won’t help if the damage lasts too long.

This compound only works if you give it at just the right amount—too little or too much doesn’t help, so getting the dose exactly right is super important.

A natural compound called Brosimine B helps retinal cells survive better at a very specific low dose, but hurts them if you give too much.