Sri Lanka batsman Kusal Perera has been cleared of any injuries but will have his fitness for the remainder of the second Test against Australia assessed on Monday.

Kusal made 29 before retiring hurt after copping a fierce Jhye Richardson delivery to the helmet in the first session on day three.

Sri Lanka were skittled all out for 215 and Australia declared on 196-3 to set the tourists a huge target of 516 for victory, with Dinesh Chandimal's side successfully negotiating six overs in Sunday's final session.

Whether Kusal will be able to assist in their attempt to eat into a 499-run deficit on day four is yet to be determined.

A Sri Lanka statement read: "Kusal Janith, who left the field after a ball hit his helmet while he was batting during the first innings, is cleared of any injuries.

"His participation in the rest of the game will depend following an assessment, which will be done tomorrow [Monday] morning."

Kusal Janith; who left the field, after a ball hit his helmet; while he was batting during the 01st innings, is cleared of any injuries.

His participation in the rest of the game will depend following an assessment; which will be done tomorrow morning. #AUSvSL

— Sri Lanka Cricket (@OfficialSLC) February 3, 2019