Fig. 1

Physical appearance and imaging examination results of the right eye before and after the operation. a A black hemispherical neoplasm was observed in the central cornea of the right eye on the day of admission. b The hemispherical corneal neoplasm in the right eye turned red on the next day after admission. c Preoperative microscopic image (day 4 after admission) of the right corneal neoplasm showed small blood vessels on the surface of the lesion, as well as edema in the surrounding cornea. d Microscopic examination at the end of the operation showed clear incision after partial removal of the corneal neoplasm; residual neoplasm is also displayed in the image. e Preoperative color Doppler ultrasonography of the right eye showed protruded corneal neoplasm (white arrow) connected with the cornea and the iris. f Color Doppler ultrasonography at 10 months post operation showed decreased size of the neoplasm, smoother surface, and connection of the lesion with the cornea and the iris. g Bilateral eyes at 12 months post operation showed a white scar in the center of the right cornea. h T2W MRI at 12 months post operation showed a crumb-shaped neoplasm (white arrow) in front of the crystalline lens (black arrow), which was connected with the cornea; the iris and the ciliary body could not be clearly distinguished