Our expert says:
Uncontrolled diabetes affects the small arteries in the eyes and can cause permanent blindness. It is imperative to keep his blood sugar under control between 3.5 and 6 mmol/dl. To prevent eye damage, he should be informed about his illness by reading up about it and to make an appointment with a dietrician and consult an endocrinologist to establish a good baseline for treatment of his diabetes.
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