Table 4.

Criteria of Patient Selection for Surgical Decompression.

1989	Simmon Lessel et al. 9	No specific protocol
1992	Mauriello et al. 10	24–72 hours of steroid and then surgery
1993	Mahapatra et al. 4	Three weeks of steroid therapy and then assessment
1996	P.I. Chou et al. 1	No specific protocol was mentioned for case selection
1999	Levine et al. 11	No specific protocol was mentioned for case selection
1999	S.Mine et al. 12	No specific protocol was mentioned for case selection
2000	Kountakis et al. 13	48 hours of steroid therapy and then assessment
2003	Rajiniganth et al. 14	I. 72 hours of a steroid without improvement
		II. Progressive visual loss
		III. Total blindness with CT evidence of nerve compression
2004	Yang et al. 15	Three days of steroid if there is no improvement and then decompression
2004	Goldenberg-Cohen et al. 16	No specific protocol was mentioned for case selection
2006	Shibuya et al. 2	Steroid therapy and surgery for non-responding cases, but the observation threshold is not mentioned
2008	H Li et al. 17	No specific protocol was mentioned for case selection
2014	William Marshal Guy et al. 18	Three days of steroids and then assessment for surgery
2018	Min Chen et al. 19	No specific protocol was mentioned for case selection
2018	Yu et al. 20	Three days of steroid therapy and then re-assessment
2019	Chen et al. 21	Upfront surgery after randomised treatment allotment