This is because the difference between usual and post-meal blood glucose levels is not as large as in diabetic cases of hypoglycemia. A crash is usually felt within four hours or less of heavy carbohydrate consumption. Symptoms of reactive or postprandial hypoglycemia include:
The transverse size of a human adult eye is approximately 24.2 mm and the sagittal size is 23.7 mm with no significant difference between sexes and age groups. Strong correlation was found between the transverse diameter and the width of the orbit (r = 0.88).
The bottom line: If you are noticing a big change in your vision, you should see a doctor to find out what's going on. Your eyeball is slightly smaller than a gumball. A gumball you'd get from a grocery store gumball machine gumball is about 27 to 28 millimeters wide. The average human eyeball is 24 millimeters wide.