Worsening of diabetic retinopathy with rapid improvement in systemic glucose control: A review

Area of Science:

• Ophthalmology
• Endocrinology
• Metabolic Disorders

Background:

• Diabetic retinopathy (DR) can worsen upon initiating effective glycemic control in some diabetic patients.
• This phenomenon, known as early worsening, occurs before long-term benefits of glycemic control are observed.
• Risk factors include poor blood glucose control and hypertension.

Purpose of the Study:

• To provide an overview of early worsening of diabetic retinopathy (DR).
• To explore the pathophysiology of this paradoxical phenomenon.
• To summarize clinical implications for managing diabetes and DR.

Main Methods:

• Review of current data on early worsening of DR.
• Analysis of the phenomenon in various clinical settings (e.g., insulin/non-insulin treatment, bariatric surgery, pregnancy).
• Discussion of proposed mechanisms and theories.

Main Results:

• Large and rapid reductions in blood glucose levels are associated with early worsening of DR.
• The phenomenon is observed across different treatment modalities and patient populations.
• Mechanisms remain speculative despite general awareness.

Conclusions:

• Early worsening of DR is a recognized complication of initiating intensive glycemic control.
• Understanding the underlying mechanisms is crucial for clinical practice.
• Strategies to mitigate this temporary worsening are needed to ensure patient adherence and long-term outcomes.