20 Signs of High Blood Sugar

2. Blurred vision

If you experience an onset of blurred vision, it could be because you have high blood sugar levels. High blood sugar levels that do not decrease cause the eye’s lens to swell up. This change to the lens affects your ability to see. Left untreated, the permanent swelling of the lens can do permanent damage and affect your eyesight. Diabetic retinopathy describes the eye conditions caused by diabetes. The two most common are macular edema and proliferative retinopathy.

Macular edema is caused by the swelling of the macula from leaking fluids. The macula is found in the center of the retina. It is vital for 20/20 vision and the ability to distinguish and see color. Since the macula is affected, your sharp central vision and color vision will be affected. You’ll have blurred, wavy vision and the way you see color will change.

Proliferative retinopathy is caused by leaky blood vessels. They leak fluid into the center of the eye. Your night vision is affected, and you’ll get spots or floaters obstructing your vision. Blurry vision can also indicate that you have proliferative retinopathy. Another cause of blurred vision that can be brought on by high blood sugar levels is glaucoma. The National Eye Institute suggests that adults with diabetes are twice as likely to get glaucoma than non-diabetics.

Glaucoma is a condition that occurs when the pressure in the eye causes damage to the optic nerve. In addition to blurred vision, glaucoma is characterized by tunnel vision, pain, reddening of the eyes, and seeing a halo effect around lights. High blood sugar levels may also be indicated by the development of cataracts. Diabetes brings forward the onset of cataracts. Cataracts cause blurry vision, faded colors, double vision in the affected eye, and sensitivity to light.