During the observation period , CRT improved in laser [ 37.6 m ( -66.82 ; 142.0 ) ] , but deteriorated in IVR [ -142.4 m ( -247.6 ; -37.16 ) ] and combination [ -171.7 m ( -250.4 ; -92.96 ) ] ( laser versus IVR p = 0.01 , laser versus combination p = 0.002 ) indicating recurrent oedema .