Final answer:
After the diagnosis of type 1 diabetes mellitus (DM), an ophthalmology exam should be scheduled within 3-5 years of diagnosis, then once a year thereafter.
Step-by-step explanation:
After the diagnosis of type 1 diabetes mellitus (DM), an ophthalmology exam should be scheduled within 3-5 years of diagnosis. This initial exam will establish a baseline for future comparison. Following the baseline exam, regular ophthalmology exams should occur at least once a year to monitor for any diabetic retinopathy, a common complication of diabetes that affects the blood vessels in the retina.