Fig. 1From: Inter-visit measurement variability of conjunctival vasculature and circulation in habitual contact lens wearers and non-lens wearersFunctional slit-lamp biomicroscope (FSLB) and images. FSLB was modified from a standard slit-lamp biomicroscope equipped with a digital camera through an inherent camera port (a). The video cropping function of the camera enables an additional 7× magnification, which is combined with the 30× inherent magnification. FSLB was used to acquire an image of the temporal conjunctiva (b) with high magnification, and the red blood cell clusters are shown in the insertsBack to article page