Optical services such as: optical center measurements, pupillary distance, dispensing/fitting of prescription glasses, frame adjustments, one-time prescription redo at no additional cost within 90 days of purchase, frame warranty, and some minor repairs are covered when you purchase your prescription and non-prescription glasses at Moderne Eye. If you want us to provide an adjustment for glasses purchased elsewhere, at your own risk, the charge is $50 per eyeglass for an adjustment.