"It's definitely made things just that little bit sharper, maybe within 50 meters or so," McIlroy said Wednesday ahead of his first tournament of 2016 at the Abu Dhabi Championship. "I feel like I've always been a decent green reader, but maybe not quite as good as I could be. So that was one of the reasons why I took this step."
McIlroy said the surgery hasn't made a huge difference to his long-range sight.
The Northern Irishman hasn't played competitively since winning the World Tour Championship in November in Dubai, clinching the Race to Dubai on the European Tour. He was back in Dubai last week, spending time on the range, and making his now-customary list of goals for the year on the back of his boarding pass as he flew out to the Persian Gulf emirate.
"There's always obvious ones and result-based goals. But I never really write those down because they are always there," McIlroy said. "They are always obvious, they are always in the forefront of your mind. You want to win tournaments and you want to achieve things, but it's about how to go about that on your off weeks."
So winning the Masters to complete the career Grand Slam of the majors wasn't on the list?
"Yeah, that's obvious," he said, laughing. "I don't need to write that down."
The buildup to the Masters was the No. 1 topic of conversation this time last year. Now, the focus is elsewhere -- particularly on Jordan Spieth, McIlroy's big rival who dominated the sport in 2015 by winning two majors, the Tour Championship on the PGA Tour and two other tournaments to clinch FedEx Cup, and won more than $22 million.
McIlroy, who is paired with Spieth for the early round at Abu Dhabi, believes that could give him a better chance going to Augusta National in April.
"I feel I'm better equipped now, I've got a little bit of experience in how to deal with it and approach it," McIlroy said. "I know it's going to be there, but there's still, there's a whole bunch of other story lines that are going on with golf right now.
"Jordan is obviously defending and that's so many other guys that have a chance going in there. I think it will be a little different this year, for sure."