Blurry vision has many possible causes. In a person with diabetes, blood sugar changes can temporarily affect focus, while diabetic eye disease can threaten vision without being corrected by a stronger pair of glasses.
A prescription measured while vision is changing may not remain accurate. Ask an eye-care professional whether the prescription is stable enough before ordering made-to-prescription eyewear.
People with diabetes should follow the examination schedule recommended by their health and eye-care professionals. A comprehensive dilated eye examination can look for changes that an online vision tool or eyewear seller cannot assess.
Sudden loss of vision, new flashes or floaters, a curtain-like shadow, significant pain, injury, or rapidly worsening symptoms require prompt medical attention. Do not wait for an eyewear order or use new glasses as a diagnostic test.