Bridget Riley's "Large Fragment" (2006) is a striking example of the artist's continued exploration of optical effects and geometric abstraction in her later career. This screenprint is part of Riley's esteemed Lozenges series, which emerged in the early 2000s as a reflection of her ongoing fascination with shape, line, and colour.

The composition features interlocking forms typical of her Lozenges series, with shapes meticulously arranged to create a dynamic interplay of visual elements, challenging the viewer's perception and inviting active engagement with the artwork. Riley's signature style of creating optical illusions through carefully calibrated patterns is evident in this piece, as the forms seem to shift and move as the eye travels across the surface.

Here, Riley employs a vibrant colour palette, a departure from her earlier monochromatic works. The interplay of hues contributes to the work's sense of movement and depth, while the substantial size allows viewers to become fully immersed in the piece. Composed of an enlarged, zoomed-in portion of a larger pattern or arrangement, Riley's work explores the intricacies of her geometric forms in greater detail, further stimulating viewers' perceptions and creating a more immersive visual experience.

As with many of Riley's works, "Large Fragment" explores rhythm, movement, and the emotional impact of colour and form. The artwork invites viewers to engage with it actively, experiencing the shifting perceptions and dynamic energy that characterize Riley's oeuvre.