The term 'RELATED TO VISION' can be described by two crossword solutions: OCULAR and OPTIC. OCULAR is a six-letter word that refers to the EYE or vision, while OPTIC is a five-letter word that refers to the EYE or vision as well. Both terms are related to vision and are often used interchangeably. OCULAR is derived from the Latin word oculus, meaning 'EYE, ' while OPTIC is derived from the Greek word optikos, meaning 'of sight.' Both terms are used to describe the anatomy of the EYE, its functions, and its diseases.