We can provide lens powers from +0.25 up to +10.00 The ability to provide lens powers over +6.00 may also be able to help some with reading difficulty as we have a lot of customers needing the higher power lenses. We do NOT advertise our glasses as Medical devices! People just seem to like our glasses. We started Eye Buy Express in 2011 and have become a unique type of Eye Glass company, we are unique by having the ability to produce and sell our Reading glasses with up to 42 different lens powers from +0.25 up to +10.00 to provide the exact lens powers needed. Our glasses are still very affordable and we think you will love the pricing compared to any Optical Lab pricing. We Custom make every pair of lenses and as such, we need 4 to 6 business days to produce your order so please be ready for a few days wait while we get your order ready to ship. Once we have your glasses ready we ship the next day and shipping time is most often 2 to 4 days to arrive. If you do not know or have the lens power information it is best to get the Lens information you will need as a close "guess" may not work well for you and we will take it from there. We offer different types of lenses from the basic plastic lenses (with an anti-reflective lens coating) and also a (scratch-resistant coating) We also offer Poly Carbonate lenses that can help with being lighter than other lenses for a more comfortable fit. We look forward to working with you on the perfect pair of Reading Glasses! Please contact us with any questions and we will get right back to you.