Figure 3. Disorganization of photoreceptor disks is caused by light damage after 12 h of blue light exposure. Scanning electron microscopy images of photoreceptor outer segments from untreated (A, C) and irradiated retinal explants (B, D) are presented. After irradiation with blue light, the outer segments of the retinas lost their shape (B, D) and were no longer as precisely stacked as the controls (A, C). The contacts between disks were lost, and the lamellar structures became disrupted (D). Scale bars are 1 µm.