30mm Outer Diameter, Iris Diaphragm | Edmund Optics
Unamed 4/5 inch (Estimated) Stereo lens pair, in brass panel. No Iris Diaphragm – MW Classic Cameras
Secondary Glaucoma | Ento Key
What is the function of an iris diaphragm? - Videomaker
The Human Eye and Vision The structure of the eye –Iris –Cornea –Lens Focusing –Cornea –Accommodation The Retina –Photoreceptors –Processing time –Sensitivity. - ppt download