Diabetes and Eye Health: Protecting Your Vision

How Diabetes Affects Your Eyes

High blood sugar levels can damage the tiny blood vessels in the retina, leading to conditions collectively known as diabetic eye disease:

• Diabetic Retinopathy – Diabetic Retinopathy is one of the most common complications of diabetes and a leading cause of vision loss among adults. It occurs when high blood sugar levels damage the tiny blood vessels in the retina — the light-sensitive tissue at the back of the eye responsible for vision. Early detection is crucial, as symptoms such as blurred or fluctuating vision, dark spots or floaters, difficulty seeing at night and sudden vision loss may not appear until significant damage has occurred. Regular eye examinations are the best way to identify Diabetic Retinopathy before vision is affected. Treatment depends on the stage and severity of the condition. The main goals are to slow or stop disease progression and preserve vision. With early detection and proper management, many people with Diabetic Retinopathy can maintain good vision. Regular eye exams, a balanced diet, exercise, and consistent diabetes management are key to protecting sight.
• Diabetic Macular Oedema (DME) – Diabetic Macular Oedema (DME) is a common complication of diabetes that affects the central part of the retina, known as the macula. DME occurs when prolonged high blood sugar levels damage the small blood vessels in the retina. The underlying cause of DME is chronic high blood sugar, which damages the delicate network of retinal blood vessels. Early diagnosis is essential, as DME can progress silently before noticeable vision changes occur. Regular eye examinations are the best way to detect it early. The goal of treatment is to reduce swelling, prevent further vision loss, and, in some cases, improve vision. The choice of treatment depends on the severity of the oedema and the patient’s overall eye health. With early detection and modern treatments, many people with DME can maintain good vision and quality of life. Regular eye exams, especially for those living with diabetes, are essential for early diagnosis and timely intervention.
• Cataracts – A cataract is a clouding of the lens of the eye, which is typically clear. For people who have cataracts, seeing through cloudy lenses is like looking through a frosty or fogged-up window, it can make it more difficult to read, drive a car at night or see the expression on a friend’s face. Most cataracts develop slowly and don’t disturb eyesight early on. But with time, cataracts will eventually affect vision. At first, stronger lighting and eyeglasses can help deal with cataracts. But if impaired vision affects usual activities, cataract surgery might be needed. Fortunately, cataract surgery is generally a safe, effective procedure.
• Glaucoma – Glaucoma is one of the leading causes of blindness worldwide. It is characterised by the progressive loss of retinal ganglion cells, leading to optic nerve atrophy. The number one risk factor for developing glaucoma is family history. Individuals with a close relative diagnosed with glaucoma have a 4–9 times higher risk of developing the disease themselves. In its early stages, glaucoma is asymptomatic. About 50% of patients are unaware they have glaucoma at the time of diagnosis. As the disease progresses, individuals may experience tunnel vision, with central vision typically preserved until the late stages. If you have a strong family history of glaucoma, it’s advisable to schedule a preventative eye screening, even if you have no visual complaints. Glaucoma treatment is simple and highly effective when detected early.

If you are concerned you are showing symptoms for any of the conditions above, book a consultation with one of our consultant ophthalmologists: