I take a more conservative position with regard to targets. What constitutes ideal? My answer is the experience of a healthy non-diabetic.
The clinician’s quickly conclude that that’s an unrealistic goal to target. My answer to that is if you’re going to target an ideal, why not target a really great number? While I may not be able to achieve what gluco-normals do without any effort or thought, the act of shooting for better will likely produce better results.
My sense of the gluco-normal glycemia is this:
Time in range 65-95 mg/dL = 90%
Time hypo, < 65, = 5%
Time severe hypo, < 54 at < 1%
Glucose variability < 15 mg/dL SD, and < 15 CV (SD/mean)
Time hyper, > 140 mg/dL < 5%
Average BG <= 90
I know these are lofty goals and I don’t often hit them but targeting them materially gives me better performance. For me, aiming at unambitious goals does not motivate. I’d rather shoot for the moon and accept the inevitable less lofty but still healthy metrics.
This is an individual thing; there is no one correct standard. The targets that cause you to reach for better are your best targets. But, once you reliably hit your targets, do you ratchet them up?