Small incision lenticule extraction (SMILE) history, fundamentals of a new refractive surgery technique and clinical outcomes

Table 1 Visual and refractive outcomes after SMILE

Study	Eyes	Follow-up	Preop SEQ (D)	Postop SEQ (D)	±0.50 D	20/20 CDVA preop	UDVA 20/20 or better postop	UDVA 20/25 or better postop	Loss 2 lines CDVA
Sekundo 2011 [11]	91	6 months	−4.75 ± 1.56	−0.01 ± 0.49	80%	---	84%	92%	1.1%
Shah 2011 [12]	51	6 months	−4.87 ± 2.16	+0.03 ± 0.30	91%	67%	62%	79%	0.0%
Shah 2011 [12]	51	6 months	−1.75 to −10.00	−0.75 to +0.75	91%	67%	62%	79%	0.0%
Vestergaard 2012 [17]	127	3 months	−7.18 ± 1.57	−0.09 ± 0.45	77%	---	37%	73%	0.4%
Vestergaard 2012 [17]	127	3 months	−1.63 to −11.50	−1.63 to +1.38	77%	---	37%	73%	0.4%
Hjortdal 2012 [13]	670	3 months	−7.19 ± 1.30	−0.25 ± 0.44	80%	88%	61%	84%	2.4%
Hjortdal 2012 [13]	670	3 months	−1.63 to −9.88	−2.13 to +1.38	80%	88%	61%	84%	2.4%
Wang 2013 [18]	88	3 months	---	−0.11 ± 0.29	---	---	100%	---	0.0%
Kamiya 2014 [19]	26	6 months	−4.21 ± 1.63	+0.01	100%	100%	96%	---	0.0%
Kamiya 2014 [19]	26	6 months	−1.25 to −8.25		100%	100%	96%	---	0.0%
Sekundo 2014 [20]	54	1 year	−4.68 ± 1.29	−0.19 ± 0.19	92%	98%	88%	98%	0.0%
Sekundo 2014 [20]	54	1 year	−2.00 to −9.00	−1.00 to +0.50	92%	98%	88%	98%	0.0%
Agca 2014 [21]	40	1 year	−4.03 ± 1.61	−0.33 ± 0.25	95%	---	65%	95%	0.0%
Lin 2014 [22]	60	3 months	−5.13 ± 1.75	−0.09 ± 0.38	---	---	85%	93%	1.7%
Lin 2014 [22]	60	3 months	−1.75 to −7.75	−1.25 to +0.75	---	---	85%	93%	1.7%

SMILE: small incision lenticule extraction; Preop: preoperative; Postop: postoperative; SEQ: spherical equivalent refraction; CDVA: corrected distance visual acuity; UDVA: uncorrected distance visual acuity.

ISSN: 2326-0254