Answer:
Blurry vision
Step-by-step explanation:
Diabetes mellitus (DM) is a group of conditions in which the body does not effectively produce insulin quantities required to regulate the levels of glucose present in the bloodstream. When uncontrolled or currently undiagnosed, DM can lead to damage to the blood vessels of the eye, specifically those associated with the retina located in the posterior eye, a condition known as diabetic retinopathy. The retina houses the photoreceptor cells responsible for low light vision, color vision, and detailed vision known as the rods and cones. Impaired blood flow to these structures means they have a diminished ability to carry out their physiological purpose, translating to varying degrees of visual impairment, ranging from blurry vision, dark spots, or floaters to blindness in the affected eye.
Edema, especially in the macula, is not uncommon, however it is less characteristic of diabetic retinopathy than the changes in vision.
Blurry vision is a symptom of diabetes mellitus (DM).