Fig. 2

Clinical phenotypes. A The right cornea early after PKP was transparent. B The left cornea was opaque and edematous combined with stromal inflammation on the nasal side in 2012. C The right cornea was transparent, and there was no obvious recurrence at the edge of the graft at 7 years after PKP. The thickness of the graft had no significant difference from that early after surgery. D The cornea of the left eye was completely opacque before PKP and was thickened irregularly. E Ultrasound biomicroscopy of the left eye before surgery showed irregular thickening of the cornea and guttate excrescences on the posterior elastic layer. F The left cornea was transparent after PKP in 2019