20 Signs of High Blood Sugar

2. Blurred vision:

Onset of blurred vision can be an indication of high blood sugar levels. Persistent high blood sugar that does not decrease causes swelling of the eye's lens, affecting vision. If left untreated, this chronic lens swelling can cause permanent damage and vision impairment. Diabetic retinopathy is a term used to describe eye conditions resulting from diabetes, with macular edema and proliferative retinopathy being the most common.

Macular edema occurs when the macula, located in the center of the retina and essential for clear vision and color perception, swells due to fluid leakage. Consequently, sharp central vision and color vision are affected, resulting in blurred and distorted vision. Proliferative retinopathy is characterized by leaky blood vessels that release fluid into the eye's center. It affects night vision and can lead to the appearance of spots or floaters obstructing vision. Blurry vision can also be caused by proliferative retinopathy.

Moreover, individuals with diabetes are twice as likely to develop glaucoma, a condition where the pressure in the eye damages the optic nerve, causing symptoms such as blurred vision, tunnel vision, eye pain, redness, and seeing a halo effect around lights. Cataracts, which cause blurred vision, faded colors, double vision in the affected eye, and light sensitivity, can also be accelerated by high blood sugar levels.