Spectacles are a type of eyewear that people wear to correct their vision. They are also known as eyeglasses or glasses, and they have two main parts: the lenses and the frames that hold the lenses. An ophthalmologist (eye doctor) can test your eyes and see if you need spectacles. Spectacles can also provide magnification that is useful for people with vision impairments or specific occupational demands.

In recent years, the term "spectacles" has also been used to refer to a product called "Snap Spectacles"). These are smart glasses that are dedicated to recording video for the Snapchat service). They feature a camera lens and are capable of recording short video segments and syncing with a smartphone to upload to the users online account). The first generation of Snap Spectacles was released in 2016, and a second generation was released in 2018 with updates including water resistance functionality and increased storage). The Snap Spectacles 3, which feature two HD cameras on-device, were announced in 2019). These smart glasses also have augmented reality (AR) experiences available on them, such as a zombie chase, a pong game, Solar System projection, and an interactive art piece).