1. (

• optics

) the branch of physics that studies the physical properties of light ;

2. (

• optics

) optical properties; "the optics of a telescope" ;

1. (

• ocular ,
• optic ,
• optical ,
• ophthalmic ,

) of or relating to or resembling the eye; "ocular muscles"; "an ocular organ"; "ocular diseases"; "the optic (or optical) axis of the eye"; "an ocular spot is a pigmented organ or part believed to be sensitive to light"; "ophthalmic defect" ;

2. (

• ocular ,
• optic ,
• optical ,
• visual ,

) relating to or using sight; "ocular inspection"; "an optical illusion"; "visual powers"; "visual navigation" ;