Some research-telescope optical instruments incorporate Interferometry internally, e.g., a Michelson Interferometer in an Imaging Fourier Transform Spectroscope. Also, interferometry using a Grating rather than a prism qualifies. Gravitational Wave Detectors such as LISA also incorporate them.
Optical interferometers analogous to Radio and Microwave interferometers and arrays, e.g., Aperture Synthesis, for measurements and images with a very fine Angular Resolution have been created. There are challenges in designing, building, and operating them, otherwise they would be in more common use. Examples:
European Southern Observatory Very Large Telescope (ESO VLT)
Large Binocular Telescope (LBT)
Palomar Testbed Interferometer (PTI)