blurred vision on a diet

As an obese teenager, I went with my mom to Siddha samadhi yoga. There we had to shift to eating raw vegetables. In a couple of days, I had blurred vision. Looking at a presentation at undergrad college, I had to close one eye and focus with the other to make sense of what I was seeing. Now I know its got to do with glucose levels during low carb diet.

Now I am open to eating carrot, cucumber, lettuce for lunch.
A friend had chipotle lunch at her house for her birthday. The food minus the tortilla and rice was so friendly for low carb diet.