“I was like, ‘Oh, I was getting Lasik surgery,’ ” Nido said.

The infielder was impressed. He had received the same operation, and it had taken him a week to recover.

Nido, who saw the pitcher’s release point and the ball’s rotation more clearly, noted that there were side effects off the field, as well. He saw glare and halos around any lights. He called the feeling “insane.” In the weeks afterward, he did not drive at night because his eyes could not focus. The glare has been reduced over the last two months.

“They told me, ‘Don’t get scared, but it kind of fluctuates,’ and it does,” said Nido, who saw a positive spike in his batting average in Puerto Rico after the surgery. “It’s the eye getting used to the new way.”

After hitting .167 in 84 at-bats with the Mets last season, Nido welcomed anything that could give him the split-second improvement that could help him stick in the majors. On a roster packed with capable catchers, that could be a tricky goal. Nido was called up last April when the starter, Travis d’Arnaud, injured himself two weeks into the season, but was sent down to Class AAA when the Mets traded for the former All-Star Devin Mesoraco.

Now Nido isn’t even the only catcher on the roster with surgically corrected eyes. Three weeks before he decided to have the operation, the Mets signed Wilson Ramos, a two-time All-Star who had the same Lasik procedure during spring training in 2016 when he was with Washington. It took Ramos a year to come around to the procedure, because he was scared about possible vision loss when a doctor first recommended it.