Clinical Trial: Assessment of Bifocal and Prismatic Bifocal Spectacles for Myopia Control in Children
Study Status: Completed
Recruit Status: Completed
Study Type: Interventional
Official Title: Assessment of Bifocal and Prismatic Bifocal Spectacles for Myopia Control in Children
Brief Summary:
- To determine if the effect of near-addition lenses (bifocals) is more prominent for children with high myopia progression.
- To study how different subject characteristics such as age, gender, baseline degree of myopia, baseline near phoria and baseline lag of accommodation affect the efficacy of bifocal lens wear in myopic children.
- To investigate the effect of incorporating near base-in prisms along with the near-addition lenses (prismatic bifocals) on myopia progression in myopic children.
Detailed Summary:
Sponsor: Essilor International
Current Primary Outcome: Myopia progression, measured by cycloplegic autorefraction [ Time Frame: Every 6 months ]
Original Primary Outcome: Same as current
Current Secondary Outcome: Axial length, measured by A-scan ultrasonography [ Time Frame: Every 6 months ]
Original Secondary Outcome: Same as current
Information By: Essilor International
Dates:
Date Received: November 4, 2008
Date Started: April 2003
Date Completion:
Last Updated: November 6, 2008
Last Verified: November 2008
