Unless you're developing an eye disease like cataracts or macular degeneration opticians are for the most part unnecessary.
Indeed, and I speak from experience.
Almost a year ago, when I was experiencing eye strain, eye irritation, red and teary eyes, and other issues due to a new screen (funny enough, it wasn’t an OLED display but a new iPad Pro), I went to an ophthalmologist, and she checked my retina for some kind of damage or detachment or macular degeneration, and before that they checked me for myopia/hyperopia/astigmatism. Nothing more (and nothing less).
Then, she said I had healthy eyes, maybe a bit dry but that was all. That’s when I asked her more concretely about screens, and told her that my issues started with a new screen.
She then told me that I should rely on
trial and error, literally, because “we still know almost nothing about the consequences of regular use of screens, and we won’t probably know until, at least, ten years from now, when we will start seeing the consequences; until then, as I said, trial and error, if you notice a screen bothers you, return the device and try another model”.
So… yeah, ophthalmologists can do little in this regard, unless they are in a related research field, but as she said, there’s little research about this.