Dr. Zack's is amazing! He has apparently cured my reoccurring corneal abrasion/erosion after almost 3 years (after an optometrist performed a debridement incorrectly). I am very pleased about that. However, I'm giving Maine Eye Center a 4 rating because the wait time is ridiculous. Don't expect to be seen for at least an hour after your scheduled time, they apparently double book often, but....I will wait for the best! I recommend Maine Eye Center for sure!