If my eyesight remains the same but my eyes get tired easily, would it be a good idea to get an eye exam?

Looking at the eye chart, it doesn't seem much different from before, but my eyes get tired quickly when I look at the computer for a long time.

I can't tell on my own whether it's simply because of my age, my glasses prescription, or a problem with my eyes themselves.

If this discomfort persists even without a decline in vision, would it be a good idea to get it checked at an ophthalmologist?