Scanning ophthalmoscope for examining the fundus of the eye
Secondary image reproduction device
Slit lamp microscope
Slit pattern projecting apparatus having alignment detecting mea
Slit-lamp apparatus
Small pupil binocular indirect ophthalmoscope
Solid state color anomaloscope
Spectacle frame
Spectacles
Spectacles frame
Spectacles frame having biased auxiliary temples
Spectacles having pivotable lens covers
Spectacles having retractable sidepieces
Stereo generator
Structure of foldable glasses
Support for an ophthalmic instrument
Support structure for protective mask optical insert
System for providing sound distinctions for auditory conditionin