Comparison of Long-Term Outcomes and Refractive Stability following SMILE versus SMILE Combined with Accelerated Cross-Linking (SMILE XTRA)

Table 5

Questionnaire and mean scores for evaluation of spectacle independence, patient satisfaction, and quality of vision.

What is your level of spectacle independence after surgery?
(a) Totally dependent on spectacles for all work (0–3.99)	(b) Partially dependent for certain work (4–7.99)	(c) Completely independent of spectacles (8–10)
SMILE = 9.4
SMILE XTRA = 9.0
Do you experience any dysphotopsia symptoms such as glare or halos? If yes, grade the same as per the following
(a) Minimal/nil and occasional (0–3.99)	(b) Moderate and frequent (4–7.99)	(c) Severe and persistent (8–10)
SMILE = 2.2
SMILE XTRA = 3.5
Do you experience any dry eye symptoms? If yes, grade the same as per the following
(a) Minimal/nil and occasional (0–3.99)	(b) Moderate and frequent (4–7.99)	(c) Severe and persistent (8–10)
SMILE = 2.4
SMILE XTRA = 3.8
How would you grade the quality of your vision after surgery?
(a) Poor (0–2.99)	(b) Good (3–4.99)	(c) Very good (5–7.99)	(d) Excellent (8–10)
SMILE = 9.1
SMILE XTRA = 8.2
How would you grade your overall satisfaction after the procedure?
(a) Not satisfied at all (0–30.99)	(b) Somehow satisfied (31–60.99)	(c) Moderately satisfied (61–89.99	(d) Fully satisfied (90–100)
SMILE = 98.2%
SMILE XTRA = 95.4%

No eye in either group progressed to ectasia or required an enhancement procedure for significant residual refractive error during the course of the study.