High Blood Sugar and Diabetes
Excessive amounts of sugar in the blood can lead to swelling of the ocular lens, which affects the sense of sight. It can result in blurry vision. This is usually the case for people with diabetes or early onset of the disease. It seldom happens to people with normal health who just happened to consume excessive amounts of sugar or calories in one sitting.
Blurry vision attributable to high blood sugar typically disappears once the sugar level in the blood stabilizes. People with diabetes who experience vision blurring are likely already familiar with this situation. However, those who do not think of themselves as a person with diabetes should consider the possibility and get themselves tested (for diabetes) if they suffer blurry eyesight after consuming large amounts of sugar or calories.
Diabetes also brings about a few other eye conditions that can be characterized as or associated with blurring vision. These include macular edema or the swelling of the macula, neovascular glaucoma, cataracts, and retinopathy. Diabetic retinopathy is particularly critical because it is the leading cause of blindness among American adults. It may start as simple vision blurring but eventually progresses into losing sight.
