Myopic Regression After FS-LASIK and SMILE

Evidence database / Studies / lin-2024-taiwan-lasik-smile-regression

832enrolled patients*

832enrolled eyes*

2structured arms

548maximum standardized days follow-up

* Descriptive sum of reported arm counts. “≥” indicates that one or more arm counts were not reported; missing values are not treated as zero.

Study arm

Matched FS-LASIK cohort

LASIK

Population

Patients: 416
Eyes: 416
Bilateral treatment: No
Age range: Not reported
Sphere range: Not reported
Cylinder range: Not reported
Spherical equivalent: Not reported
Corneal thickness: Not reported

Eligibility definition

Inclusion
Matched patients undergoing FS-LASIK for myopia correction.

Exclusion
Not structured

Reported outcomes by follow-up

Outcome	Follow-up	Follow-up sample	Result	Reported fraction	Provenance
Spherical-equivalent regression from month 1 refractive	3 months	416 eyes	-0.17 D	denominator: 416 eyes	VERIFIED Source · Abstract — Results
Spherical-equivalent regression from month 1 refractive	6 months	416 eyes	-0.24 D	denominator: 416 eyes	VERIFIED Source · Abstract — Results
Spherical-equivalent regression from month 1 refractive	9 months	416 eyes	-0.31 D	denominator: 416 eyes	VERIFIED Source · Abstract — Results
Spherical-equivalent regression from month 1 refractive	12 months	416 eyes	-0.32 D	denominator: 416 eyes	VERIFIED Source · Abstract — Results
Spherical-equivalent regression from month 1 refractive	18 months	416 eyes	-0.33 D	denominator: 416 eyes	VERIFIED Source · Abstract — Results

Complications

No structured complication observations are available for this arm. This means “not reported in this dataset,” not zero complications.

Study arm

Matched SMILE cohort

SMILE

Population

Patients: 416
Eyes: 416
Bilateral treatment: No
Age range: Not reported
Sphere range: Not reported
Cylinder range: Not reported
Spherical equivalent: Not reported
Corneal thickness: Not reported

Eligibility definition

Inclusion
Matched patients undergoing SMILE for myopia correction.

Exclusion
Not structured

Reported outcomes by follow-up

Outcome	Follow-up	Follow-up sample	Result	Reported fraction	Provenance
Spherical-equivalent regression from month 1 refractive	3 months	416 eyes	-0.07 D	denominator: 416 eyes	VERIFIED Source · Abstract — Results
Spherical-equivalent regression from month 1 refractive	6 months	416 eyes	-0.18 D	denominator: 416 eyes	VERIFIED Source · Abstract — Results
Spherical-equivalent regression from month 1 refractive	9 months	416 eyes	-0.23 D	denominator: 416 eyes	VERIFIED Source · Abstract — Results
Spherical-equivalent regression from month 1 refractive	12 months	416 eyes	-0.21 D	denominator: 416 eyes	VERIFIED Source · Abstract — Results
Spherical-equivalent regression from month 1 refractive	18 months	416 eyes	-0.24 D	denominator: 416 eyes	VERIFIED Source · Abstract — Results

Complications

No structured complication observations are available for this arm. This means “not reported in this dataset,” not zero complications.

Study design

Retrospective propensity-score matched comparative cohort

Country: Taiwan
Publication-reported places: Taipei · Taoyuan · Nobel Eye Institute · Shuang Ho Hospital · Chang Gung Memorial Hospital
Multicenter: Yes
Prospective: No
Randomized: No
Source type: RETROSPECTIVE
Regulator: Not reported

Place metadata may refer to a treatment site, institution or author affiliation. Confirm its role in the linked publication.

Limitations and notes

Locations are taken from the PubMed affiliation record.

Missing fields are not interpreted as negative findings. Arm counts may not be additive in all study designs.

Study evidence level
A simple, non-GRADE hierarchy based on design: randomized and large regulatory trials are high; prospective cohorts moderate; retrospective observational studies low. Manual review can override this label.