The image is a vintage anatomical illustration, likely from a medical or scientific text. It depicts a detailed drawing of an eye, labeled with letters A, B, and C. The eye itself is rendered with intricate detail, showing the iris, pupil, and surrounding structures. It's positioned within a large circle, suggesting a cross-section or a schematic representation. Below the first eye, there's a smaller, simplified eye also enclosed within a circle. Below that is a small circle with a dot in the center and a line extending downwards, resembling a nerve or optic fiber. The illustration is done in black ink on a cream-colored background. At the top, the text 'PLATE. XXI.' is visible, indicating the plate number within the larger work. The style is characteristic of older anatomical illustrations, emphasizing precision and detail over artistic flair.