Even with young eyes, it is impossible to have the target and front and rear sites in focus at the same time. You should focus on the front site and both the target and the rear sight will be a little fuzzy. Once you get old enough to need reading glasses, even this will be difficult. The red dot site will fix this, but it is kind of cumbersome for a carry gun. Big white dots on the sites help. For target shooting, try some weak reading glasses. I usually shoot two-handed, but if you try one-handed you will usually find that you can see the sites better since they will be a bit farther away. Getting old sucks.