Eyeglasses and Field glasses

Eyeglasses noun - A pair of lenses set in a frame that is held in place with ear supports and which are usually worn to correct vision.

Field glasses and eyeglasses are semantically related. In some cases you can use "Field glasses" instead a noun "Eyeglasses".

Field glasses noun - An optical instrument designed for simultaneous use by both eyes.

Eyeglasses and field glasses are semantically related. You can use "Eyeglasses" instead a noun phrase "Field glasses".