Younger people do sometimes need to see retinal specialists. I've seen one since I was about sixteen because I have congenital toxoplasmosis affecting one eye. Now, I was always the only person without gray hair in the waiting room, but there I was!
If you have ever heard that pregnant women should not change cat boxes, my condition is why - you can contract the disease and pass it on to your unborn child. (We only had outdoor cats when I was growing up - I think my mom must have picked it up in the garden.) It is not harmful to children and adults with functioning immune systems, but when it is passed to a fetus, it can result in a very sick baby.
I'm fortunate - my case is confined to one eye. The toxo parasites are encysted in my retina, causing scar tissue and floaters.