A 3-year Randomized Clinical Trial of MiSight Lenses for Myopia Control

• Published in: Optometry and vision science Vol. 96; no. 8; pp. 556 - 567
• Main Authors: Chamberlain, Paul, Peixoto-de-Matos, Sofia C., Logan, Nicola S., Ngo, Cheryl, Jones, Deborah, Young, Graeme
• Format: Journal Article
• Language: English
• Published: United States American Academy of Optometry 01.08.2019
• Subjects: Axial Length, Eye - physiopathology; Child; Contact Lenses, Hydrophilic; Disposable Equipment; Double-Blind Method; Female; Humans; Male; Myopia - physiopathology; Myopia - therapy; Refraction, Ocular - physiology; Treatment Outcome
• ISSN: 1040-5488; 1538-9235; 1538-9235
• DOI: 10.1097/OPX.0000000000001410

SIGNIFICANCEResults of this randomized, double-masked clinical trial demonstrate the effectiveness of the MiSight soft contact lens in slowing myopia progression over multiple years. PURPOSEThe purpose of this study was to quantify the effectiveness of MiSight daily disposable soft contact lens in slowing the progression of juvenile-onset myopia. METHODSMyopic children (spherical equivalent refraction, −0.75 to −4.00 D; astigmatism, <1.00 D) aged 8 to 12 years with no prior contact lens experience were enrolled in a 3-year, double-masked, randomized clinical trial at four investigational sites in four countries. Subjects in each group were matched for age, sex, and ethnicity and were randomized to either a MiSight 1-day contact lens (test) or Proclear 1-day (control; omafilcon A) and worn on a daily disposable basis. Primary outcome measures were the change in cycloplegic spherical equivalent refraction and axial length. RESULTSOf the subjects enrolled, 75.5% (109/144) completed the clinical trial (53 test, 56 control). Unadjusted change in spherical equivalent refraction was −0.73 D (59%) less in the test group than in the control group (−0.51 ± 0.64 vs. –1.24 ± 0.61 D, P < .001). Mean change in axial length was 0.32 mm (52%) less in the test group than in the control group (0.30 ± 0.27 vs. 0.62 ± 0.30 mm, P < .001). Changes in spherical equivalent refraction and axial length were highly correlated (r = −0.90, P < .001). Over the course of the study, there were no cases of serious ocular adverse events reported. Four asymptomatic corneal infiltrative (one test, three control) events were observed at scheduled study visits. CONCLUSIONSResults of this clinical trial demonstrate the effectiveness of the MiSight daily disposable soft contact lens in slowing change in spherical equivalent refraction and axial length.