LASIK for grandma

Hey My grandma is 73 years old. She has lost her memory’s small portion. I thought that it will affect her in a small scale. She was a good reader. Last night she was unable to read the book and she started shouting at everyone. She threw her spectacles and brock into pieces. Now she is not able to read anything. I was thinking about making her undergo LASIK eye surgery from a clinic in Toronto. Will that be a safe play? I guess that she will be able to read more clearly. But she is diabetic. Is that a deal while undergoing the treatment? It will be great if you can help here. Thanks in advance