(Must Buy Both Eye) Reading Glasses with Different Strength for Each Eye PR032Must buy both left and right lens powers. Reading glasses with spring hinges, frame height about 1 1/2 inches (38mm). Ready for who need them – We started making this product in order to meet the needs of people who farsighted with different diopters in each eye.Now, you can choose a different lens power in your readers directly. Flex Combinations – The range of lens strength combinations are from 0 strength (plano) to 4.0 strength. Simply choose different strengths for your right eye and left eye, and then wait for your customized specs shipped. Easy to install – With ready-made frame and insertable front connection, it is super easy for everyone to make right and left frame together. (Please install reading glasses by yourself if required)