Actually, you are not suggested to get semi-rimless glasses according to your prescription. Your glasses prescription will have numbers in the sphere category that indicate the strength of power in your lenses. A number above 2.00 to 3.00 indicates a stronger power. Don't try to fit rimless frames for prescriptions that are over 6.00. The edges of the lenses become too thick for nearsighted prescriptions (written as -6.00 or higher) and too thin for farsighted prescriptions (written as +6.00). There are certain exceptions, depending on other factors in your prescription, so if you are unsure, check with your eye care practitioner.