If I remember right, I think there is at least one case that happen at Lourdes. And there is also the miracle that restored sight to Gemma di Giorgi.
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Padre Pio
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"] Gemma di Giorgi was a child born without pupils in her eyes. Gemma was declared to be incurable by a number of specialists. At the age of seven (1947), Gemma’s grandmother brought her to meet Padre Pio.[lxxviii] About half way there Gemma began to see. Gemma’s grandmother and other friends marveled at this miraculous occurrence; they called it a miracle! When Gemma arrived, Padre Pio, although never having seen Gemma before, called Gemma by name in front of the congregation at church, and heard her confession. During the confession, despite the fact that Gemma mentioned nothing of her blindness, Padre Pio made the sign of the cross over each eye. At the end of the confession, he blessed her, and said: “Be good and saintly.”
Decades after this event, Gemma sees perfectly and still undergoes eye examinations by specialists who agree that there is no explanation for her ability to see. Gemma has no pupils, and it is a scientific fact that without pupils a person cannot see. Gemma’s grandmother also said: “Many eye doctors have arrived here in our home and all have declared the same thing: that without pupils in one’s eyes one should not be able to see and that, therefore, this is a miracle.”