Table 1

Pre-retreatment manifest refractive spherical equivalent in dioptres and retreatment trends between 1998 and 2015

Year	Pre-retreatment manifest refractive spherical equivalent	Retreatment attempted (D)	3 months post-retreatment (D)	Eyes, n (% of total)
1998	−2.10±1.21	−2.38±0.57	−0.59±0.61	6 (1.4)
1999	−1.77±0.83	−1.82±0.74	−0.37±0.60	73 (4.5)
2000	−1.61±0.87	−1.78±0.83	−0.32±0.44	135 (5.6)
2001	−1.51±0.65	−1.58±0.56	−0.09±0.35	117 (4.3)
2002	−1.45±0.81	−1.58±0.69	−0.27±0.47	82 (2.9)
2003	−1.09±0.44	−1.45±0.44	−0.01±0.39	134 (4.7)
2004	−1.23±0.62	−1.49±0.57	0.09±0.38	114 (2.3)
2005	−1.20±0.61	−1.58±0.57	0.03±0.47	178 (2.5)
2006	−1.01±0.50	−1.37±0.53	0.05±0.35	143 (2.0)
2007	−1.20±1.30	−1.52±0.72	0.12±0.52	116 (2.6)
2008	−1.14±0.73	−1.58±0.74	0.03±0.44	108 (3.1)
2009	−1.42±0.70	−1.70±0.66	−0.04±0.38	48 (1.7)
2010	−1.33±0.87	−1.70±0.83	−0.02±0.29	21 (0.7)
2011	−1.07±0.57	−1.57±0.61	0.06±0.33	15 (0.6)
2012	−1.06±0.41	−1.56±0.39	0.28±0.38	20 (1.1)
2013	−1.28±0.66	−1.76±0.80	0.20±0.40	12 (0.7)
2014	−1.12±0.83	−1.63±0.75	0.05±0.20	11 (0.9)
2015	−1.38±0.53	−1.75±0.35	0.00±0.00	2 (0.2)