I assume you’re referring to an opthamologist, not a regular optometrist (doctor for glasses). I usually go about once a year… there are periods of time when I went less frequently and times when I went more frequently. And I’ve moved around a lot, so I’ve been to many.
Generally, they look in my dilated (what a pain!) eyes, and see a few “microanyeurisms” (sp?). They jot them down and send a report off to the endo. The next time, they do the same, but the ones they see are not the same as the first time. I’m told that my eyes are “healthy… for a diabetic”, meaning they don’t look like a non-diabetic’s eyes, but there’s nothing to be concerned about.
This after 30 years of Type 1 (got it at age 7). So whether I’ve gone or not gone honestly makes little difference, there’s been no treatment for anything. I suppose if they saw something, it would be important to treat it somehow right away, but if your experience is like mine, then there’s nothing lost.
Still, I’d suggest getting yourself to an opthamologist just to be sure. It’s a real pain in the ■■■ since you can’t drive afterwards (even though they will tell you that you can; I tried once and it was scary and dangerous) and the rest of your day is wasted until your eyes come back to normal size, but for once a year and for some piece of mind, it’s tolerable.