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Optical Correction and Visual Functions of Adults With Amblyopia

Study acronym: SPECTRA
StatusRecruiting
PhaseNot applicable
Started
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Record History

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  1. Re-verified, no change to tracked fieldsv5
  2. Enrollment target: 55 to 36
    • Study sites: 1 to 2
    • Eligibility criteria shortened, about 16 words
    • Secondary endpoints: details revised at 3 of 36 entries
    v4
  3. Primary completion date: Nov 30, 2023 to Nov 30, 2026
    • Study completion date: May 31, 2024 to May 31, 2027
    v3
  4. Start date changed from estimate of May 31, 2022 to Jun 13, 2022v2
  5. Study First Submitted
  • Stopped: an ongoing trial was terminated, suspended or withdrawn.
  • Notable: the trial’s plan changed such as a big move in its timeline or size, a new primary endpoint, sponsor or phase, or recruiting opened or resumed.
  • Minor: routine progress and housekeeping, such as sites added or enrollment closed.
Amblyopia is a developmental anomaly resulting from abnormal visual experiences in early life. Amblyopia causes reduced visual acuity in the absence of a pathology. Adult sensory systems are believed to be structurally invariant beyond early, critical periods of development. However, recent evidence suggest that visual functions in adults with amblyopia can be improved with optical correction alone. This study aims to investigate whether improvements in best corrected visual acuity and other visual functions can result following appropriate optical correction in adults with amblyopia. Functional measures relating to vision, binocular vision, and eye movements will be used to assess the efficacy of refractive correction for improving vision. This study will help us better understand the improvements in visual functions following optical correction, as well as the mechanisms underlying neuroplasticity in adults with amblyopia.
Trial Details
NCT Number NCT05394987
Lead Sponsor Centre for Eye and Vision Research
Collaborators: The Hong Kong Polytechnic University, University of Waterloo
Conditions
(from sponsor)		 Amblyopia
Related terms Amblyopia
Enrollment 36 participants
Start Date
Primary Completion (estimated)
Study Completion (estimated)
Updated on ClinicalTrials.gov