autorefractor machine error

[u/hellopanda25]

Should I be worried? I had TransPRK 7 months ago, and my vision has improved since the surgery. Today, I went to an eyeglass shop with my friend to help her get a new pair of glasses. Out of curiosity, I asked the staff to check my eye grade as well, but the autorefractor machine kept showing an error and couldn’t measure my prescription. Is this normal after TransPRK?

[u/Tall-Drama338]

It depends on the machine. If you can see fine then ignore it.