Figure 5.

Changes in corneal stroma in each group 8 weeks after treatment. The corneal stroma structure of group C (a, b) and group G1 (c, d) basically returned to normal. In the G2 group (e, f, g), the density of the corneal stromal cells increased, and in the superficial layer (g), a hyperreflective group of stromal cells was seen. In the G3 group (h, i, j), the density of corneal stromal cells increased, and deep (i, j) visible hyperreflective clusters formed by the aggregation of stromal cells, and rod-like and filamentary highly reflective structures were seen between the stromal cells. In the UVA group, a cell-free structure area (k) and a relatively normal area (l) could both be observed, and a deep reflective cell mass (m) could be observed in the deep matrix.