The Impact of Different Oxygen Delivery Methods on Corneal Epithelial Repair after Injury

Figure 2

Electron microscope images in each group at 72 h after operation. Electron microscopic images of group A (A1), B (B1), and C (C1) under 200x magnification; electron microscopic images of group A (A2), B (B2), and C (C2) under 400x magnification. Group A: there are 5–6 layers of corneal epithelium; no obvious neovascularization is seen at corneal limbus; the matrix collagen structure is densely and regularly arranged. Group B: there are 4–5 layers of corneal epithelium; new blood vessels can be seen at the corneal limbus; the matrix collagen structure is densely and regularly arranged. Group C: there are 2–3 layers of corneal epithelium; a large number of new blood vessels can be seen at the corneal limbus; the number of fibroblasts in the stromal layer is reduced, and a large number of inflammatory cells are observed; matrix collagen structure is slightly loose but relatively regular.