Many of these questions were submitted by patients of Dr. John. If you have a question you would like us to answer, please submit it through our Ask Dr. John page.

View all questions and their answers.

1. Did you know that most people think that 20/20 means perfect vision, and people with 20/20 vision don’t need routine eye care?
2. Did you know that the American Optometric Association recommends every child’s first comprehensive eye exam to be given at the age of six months? Can you guess why?
3. How do you do an eye exam for a six month-old?
4. What is your greatest joy in optometry?
5. Can wearing glasses make your vision worse?
6. Why is print getting harder to read as I get older?
7. Do contact lenses cause eyes to get drier?
8. What's the leading cause of irreversible blindness in people over 60?
9. What's the second leading cause of irreversible blindness?
10. What do you think of refractive surgeries, like LASIK?
11. What is the difference between an ophalmologist, and optometrist, and an optician?
12. I’ve heard that an ophthalmologist does a better eye exam than an optometrist.  Why do you believe I should go to an optometrist instead of an ophthalmologist?
13. What is astigmatism and how does it affect vision?
14. Why do some glasses cost less than $50 dollars and others more than $500?  Is there any real difference (not just a cosmetic one)?