Avoid common mistakes when buying over-the-counter hearing aids. Here's everything you need to know about OTC hearing aids, with help from an audiologist. You no longer need to wait on a hearing exam or prescription to obtain hearing aids. You now have the option to buy one over the counter to treat mild or moderate hearing loss. That means hearing aids are more accessible to the public, as well as less expensive in general. But there's a lot to consider before you hit purchase. Here's what's available and where you can buy your own over-the-counter hearing aid. What type of...