A large drop in HbA1c does cause early worsening of diabetic retinopathy. Regardless of how it's achieved. So expect some noise in generalized data.
Personally, I went from mild background retinopathy to PDR and getting laser treatment in about 3 months. My ophthalmologist (who has an academic background) didn't really know if this diagnosis had the same "quality" of someone who "naturally" progresses to PDR, but some studies say it's transient.
Personally, I went from mild background retinopathy to PDR and getting laser treatment in about 3 months. My ophthalmologist (who has an academic background) didn't really know if this diagnosis had the same "quality" of someone who "naturally" progresses to PDR, but some studies say it's transient.