Figure 3.

Images of a squamous cell carcinoma from a vocal cord sample, captured on the OpenFlexure Microscope with a 40 ${\displaystyle \times }$ objective. Panel (a) shows a focused image with well-aligned optics, while panel (b) shows the same area out of focus and with misaligned illumination. A trained user can distinguish between these images, refusing to give a diagnosis based on poor data.