1. The first thing you need to buy prescription glasses online is a prescription. The best way to get an accurate prescription is to visit an optometrist and have an eye exam, which tends to cost around $100. After the test is complete, you need to make sure you get a hard copy of your prescription so you can retain it for your records. Alternatively, you can pick up a device like the $99 EyeQue Vision Check (out of stock) to use your smartphone to check your vision and create a prescription…
