Should Aquaporin-4 antibody test be performed in all patients with isolated optic neuritis? Siantar, Rosalynn G. MBBS, MMed, FRCOphth, FAMS; Ibrahim, Farah N.I. MBBS, MMed; Htoon, Hla M. BDS, PhD; Tow, Sharon L.C. MBBS, FRCS(Ed), FAMS; Goh, Kong Yong MBBS, MMed, FRCS(Ed), FRCOphth, FAMS; Loo, Jing Liang MBBS, MMed, FRCS(Ed), FAMS; Lim, Su Ann MBBS, MMed, FRCS(Ed); Milea, Dan MD, PhD; Tien, Melissa C.H. MBBS, MMed, FAMS; Chen, Zhiyong MBBS, MRCP, MMed; Yeo, Tianrong MBBS, MRCP, MMed, FAMS, MCI; Chai, Josiah Y.H. MBBS, MRCP, FRCP, FAMS; Singhal, Shweta MBBS, MMed, FRCOphth, FAMS, PhD; Chin, Chee Fang MBChB, MMed, MRCS(Ed), FRCS(Ed), FAMS; Tan, Kevin BMedSci, BMBS, MRCP, FAMS, MS-HPEd. Journal of Neuro-Ophthalmology: December 2022 - Volume 42 - Issue 4 - p 454-461 doi: 10.1097/WNO.0000000000001573