Paddy Barnes bowed out in Almaty claiming that blurred vision as a result of head clashes may have cost him a medal at the World Championships.
The Belfast boxer was beaten by Jasurbek Latipov of Uzbekistan in the flyweight division as Latipov advanced on a 28-29, 27-30, 28-29 scoreline.
Barnes bemoaned the lack of head-gear at the championships due to the fact that boxers might have to fight six times in ten days.
In a bout where both boxers received warnings for use of the head, Barnes believes that he had to fight all three rounds with blurred vision as a result of an early clash of heads.
Barnes tweeted: "That's it all over! Was out on my feet in the 1st round and didn't recover, blurred vision for 3 rds with head clashes! F*#k your no headgear!
"Fighting with no headgear is good, but to fight 6 times in 10 days without it is impossible, Dr Wu doesn't care he isn't the one fighting."
"The fella head-butted and he fell to the ground and his man landed on him with his knee on the side of his head." - Billy Walsh
And Irish coach Billy Walsh believes that the head-clash was the turning point in the fight as he felt that Barnes' focus was gone after the incident.
Speaking to former Olympic silver medallist Kenneth Egan after the day's boxing, where the Ireland team saw two fighters progress to the semi-finals, Walsh said: "The fight was going according to plan, he (Barnes) was closing your man down, working well, doing well the first minute and a half.
"The fella head-butted and he fell to the ground and his man landed on him with his knee on the side of his head.
"And after that he was scattered and he didn’t really know a lot about what he was doing. So he didn’t really know a lot about what was going on to be honest with you.
"So he lost his focus but he tried his heart out until the bell and he was just unfortunate. Only for that blow, I think we had a real opportunity to win that."