Lyttle relieved at brother's recovery

An Irish tourist accused of knocking his brother unconscious during a late-night argument in Sydney says he is relieved that his sibling is doing well.

Barry Lyttle, 33, has been charged with recklessly causing grievous bodily harm after he allegedly punched his younger brother Patrick in the head during an argument at Potts Point on January 3.

Patrick allegedly fell onto the footpath in the early hours of the morning at the late night strip.

The 31-year-old was treated at the scene and taken to St Vincent's Hospital in a critical condition.

He is now recovering at Royal Rehab in Ryde.

Barry Lyttle's lawyer told Downing Centre Local Court that they were still waiting for the final medical assessment on Patrick, which they hope will be ready by the end of the month.

This will help the DPP decide whether to prosecute the case or leave it in the hands of police.

The lawyer successfully applied for his bail conditions to change so he only needs to report to police three times a week, rather than daily.

The matter will return to court on March 5.

Speaking outside court Barry Lyttle said his brother was doing "really well".

"It is a massive relief," he told reporters.

Barry Lyttle arrived in Australia on a tourist visa on December 29 and it's believed he and his father had come to visit Patrick, who landed in Sydney in June with plans to travel the country.

Their father, Oliver Lyttle, had previously told reporters the brothers were close, saying: "They've loved each other since they were kids".