Figure 5. Transmission electron
micrographs (TEM) of the stromal lenticule showing collagen
fibrils. A, C: Fresh lenticule. B, D:
Cryopreserved lenticule. A, B: Transversal
section of collagen fibrils. C, D: Longitudinal
section of collagen fibrils. Magnification, 50,000×.