ray tracing
optically
spectroscope
prism spectroscope
optostimulation
optical
spectropolarimeter
optically active
condenser
optical condenser
catoptrics
fibre-optic
fibreoptic
fiberoptic
fiber-optic
refract
opera glasses
field glasses
auxetometer
dioptometer
binoculars
optic axis
retinoscope
glass
optical bench
ocular
eyepiece
fibre optic
optics
optic
serial time-encoded amplified microscopy
auxometer
Wollaston's doublet
quasioptical
opticopneumatic
opticity
optosensing
astigmometer
autorefractor
prescription
spectrogoniometer
optospectroscopic
optical glass
catadioptric
phototuning
Nicol prism
dynactinometer
chromatoscanner
dioptric
heteroptics