UW Step 1 934 says “the process is slow; in long-standing hyperglycemia, sorbitol accumulates in tissues with lower sorbitol dehydrogenase activity, such as the retina, lens, kidney, and peripheral nerves”
FA 2024 (pg. 79) says “Lens has primarily Aldose reductase. Retina, Kidneys, and Schwann cells have only aldose reductase (LARKS).”