Comparing Myopia Control Spectacle Lenses for Visual Comfort, Adaptation, and Satisfaction in Myopic Children (EVASION)
Evaluation of Visual Comfort, Adaptation, and Satisfaction With a Myopia Control Lens in Myopic Children
The goal of this clinical trial is to demonstrate that the visual comfort, adaptation, and overall satisfaction associated with the use of the test spectacle lenses are not inferior to those of the control spectacle lenses in myopic children age ≥ 6 years and < 11 years old, both male and female, with no systemic or ocular anomalies. The main question it aims to answer is:
Do children adapt to the test spectacle lenses within the first 1-2 weeks of wear without significant symptoms or complaints?
Is the level of visual comfort and overall satisfaction with test spectacle lenses comparable to that of control spectacle lenses during the early adaptation period?
Researchers will compare questionnaire responses between participants wearing test lenses and those wearing control lenses to assess whether the test lenses are non-inferior in terms of visual comfort, adaptation, and user satisfaction.
Participants will:
- Wear the study spectacles for 2 weeks
- Respond to questionnaires 4 days after dispensing and at 2 weeks
- Visit Essilor R&D Centre for screening, dispensing and follow up sessions
Panoramica dello studio
Stato
Stato
Condizioni
Condizioni
Intervento / Trattamento
Intervento / Trattamento
Tipo di studio
Tipo di studio
Iscrizione (Stimato)
Iscrizione
Fase
Fase
- Non applicabile
Contatti e Sedi
Contatto studio
Contatto studio
- Nome: Celine Carimalo
- Numero di telefono: +65 67134617
- Email: carimalc@essilor.com.sg
Backup dei contatti dello studio
- Nome: Thomas Boudenne
Criteri di partecipazione
Criteri di ammissibilità
Criteri di ammissibilità
Età idonea allo studio
- Bambino
Accetta volontari sani
Descrizione
Inclusion Criteria:
- Volunteer participant who is willing and able to comply with all scheduled study visits.
- Informed consent of parent/guardian and assent of participant.
- Age ≥ 6 years and < 11 years at the time of signing informed consent and assent.
- Spherical equivalent refraction (SER) equal or less than -0.50D and equal or greater than -4.75D with astigmatism not more than 2.00 D on both eyes.
- Difference in SER (anisometropia) between two eyes should not exceed 1.50 D.
- Best corrected Distance Visual Acuity (BCDVA) better than or equal to +0.10 LogMAR in each eye.
- Be in good general health, based on the participant and the parent's/guardian's knowledge.
Exclusion Criteria:
- History of Atropine, Orthokeratology, Contact Lens or Red Light treatment.
- Strabismus by cover test at near or distance wearing correction.
- History and presence of amblyopia.
- Any ocular or systemic condition known to affect refractive status (e.g. keratoconus, diabetes, Downs syndrome, or other developmental disorders, etc.).
- Current use of ocular or systemic medications which, in the investigator's opinion, may significantly affect pupil size, accommodation or refractive state.
- History of ocular injury or surgery.
- Participation in any clinical study within 30 days of the Baseline visit.
- Sibling of existing participant of this study
- Study participants deemed inappropriate for the study by the investigator.
- The inherent ocular/systemic discomfort (dry eyes, visual fatigue, headaches, etc.) that may affect the evaluation of the study lens wearing experience, from the investigator's perspective.
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Scopo principale: Terapia di supporto
- Assegnazione: Randomizzato
- Modello interventistico: Assegnazione parallela
- Mascheramento: Separare
Numero di armi
Armi e interventi
Gruppo di partecipanti / ArmGruppo di partecipanti / Arm |
Intervento / TrattamentoIntervento / Trattamento |
|---|---|
|
Sperimentale: Test
Test Lens
|
Dispense to Test group for 2 weeks
|
|
Comparatore attivo: Control
Control Lens
|
Dispense to Control group for 2 weeks
|
Cosa sta misurando lo studio?
Misure di risultato primarie
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
|
Successful Adaptation Rate Within 1 Week After Dispensing
Lasso di tempo: Within 1 week post dispensing
|
Proportion of children who meet all of the following criteria at the 1-week visit:
Non-inferiority of the test lenses will be evaluated against the control lenses based on the between-group difference in adaptation success rates, using a pre-specified non-inferiority margin. |
Within 1 week post dispensing
|
Misure di risultato secondarie
Misure di risultato secondarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
|
Successful Adaptation Rates at Early and Later Timepoints
Lasso di tempo: 4 days and 2 weeks post-dispensing
|
Proportion of children who meet all of the following criteria at approximately Day 4 and Week 2 post-dispensing:
Between-group differences in adaptation success rates between the test and control spectacle lenses will be evaluated at both timepoints. |
4 days and 2 weeks post-dispensing
|
|
Average daily and weekly wearing time
Lasso di tempo: Assessed at Day 4 and Week 2 post-dispensing
|
Mean daily wearing time (hours/day) and total weekly wearing time (hours/week) of the assigned study spectacles will be compared between the test and control groups, based on participant/parent-reported wear time.
|
Assessed at Day 4 and Week 2 post-dispensing
|
|
Activity-specific visual comfort
Lasso di tempo: 4 days and 2 weeks post-dispensing
|
Participant-reported visual comfort during daily activities (including far vision, intermediate vision, near vision with and without digital devices, and overall vision) will be evaluated using the specific comfort subscale items from the unabbreviated Visual Comfort and Adaptation Questionnaire (Child).
Individual comfort items are rated on a 4-point Likert scale ranging from 1 (Strongly disagree) to 4 (Strongly agree).
Negatively worded comfort questions are reverse-coded prior to analysis so that all values are directionally aligned.
The subscale score is calculated as the mean of these items, yielding a minimum value of 1 and a maximum value of 4, where a higher score indicates a better outcome (greater visual comfort during daily activities).
Between-group differences between the test and control spectacle lenses will be evaluated at each specified timepoint.
|
4 days and 2 weeks post-dispensing
|
|
Overall satisfaction
Lasso di tempo: 4 days and 2 weeks post-dispensing
|
Overall satisfaction with the study spectacles will be evaluated using the satisfaction subscale items (e.g., "I hate wearing the new spectacles" and "I like my new spectacles") from the unabbreviated Visual Comfort and Adaptation Questionnaire (Child).
Individual items are rated on a 4-point Likert scale ranging from 1 (Strongly disagree) to 4 (Strongly agree).
Negatively worded items are reverse-coded during data analysis.
Subscale scores are calculated as the mean of the items, ranging from a minimum value of 1 to a maximum value of 4, where higher scores indicate a better outcome (higher satisfaction with the spectacles).
Between-group differences between the test and control spectacle lenses will be evaluated at each specified timepoint.
|
4 days and 2 weeks post-dispensing
|
|
High-contrast visual acuity (distance and near)
Lasso di tempo: At dispensing (baseline) and 2 weeks post-dispensing
|
Monocular and binocular high-contrast visual acuity at distance and near, measured while wearing study spectacles, will be compared between the test and control groups.
|
At dispensing (baseline) and 2 weeks post-dispensing
|
Collaboratori e investigatori
Sponsor
Sponsor
Investigatori
Investigatori
- Investigatore principale: Sheron Quak, Essilor R&D Centre Singapore
Studiare le date dei record
Studia le date principali
Inizio studio (Stimato)
Inizio studio
Completamento primario (Stimato)
Completamento primario
Completamento dello studio (Stimato)
Completamento dello studio
Date di iscrizione allo studio
Primo inviato
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Effettivo)
Primo Inserito
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Effettivo)
Ultimo aggiornamento pubblicato
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Parole chiave
Termini MeSH pertinenti aggiuntivi
Altri numeri di identificazione dello studio
Altri numeri di identificazione dello studio
- WS10506
- PIEC/2026/015 (Identificatore di registro: Parkway Independent Ethics Committee)
Piano per i dati dei singoli partecipanti (IPD)
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