- ICH GCP
- Registro degli studi clinici negli Stati Uniti
- Sperimentazione clinica NCT07740590
Visual Adaptation and Quality of Life After Different IOL Implantation Strategies (MMAQ-IOL)
Evaluation of Visual Adaptation and Optical Performance in Patients With Bilateral Multifocal or Mix-and-Match Intraocular Lens Implantation: A Longitudinal Observational Study
Panoramica dello studio
Stato
Condizioni
Descrizione dettagliata
Multifocal and mix-and-match intraocular lens (IOL) implantation strategies have been widely adopted to restore full-range vision after cataract surgery. However, patients often experience varying rates and trajectories of neuroadaptation to optical phenomena such as glare and halos.
This study prospectively observational tracks age-related cataract patients undergoing bilateral IOL implantation (homogeneous or mix-and-match combinations). Postoperative evaluations are systematically conducted across key follow-up time points (ranging from 1 week up to 6 months postoperatively). Primary evaluations involve standard ophthalmological measurements alongside validated visual questionnaires (including the MMAQ) to capture longitudinal adaptation patterns, spectacle independence, and overall visual satisfaction.
Tipo di studio
Iscrizione (Stimato)
Contatti e Sedi
Contatto studio
- Nome: Xiangjun Fu, Ph.D.
- Numero di telefono: +86-28-87393999
- Email: 243981469@qq.com
Luoghi di studio
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Chengdu, Cina
- Reclutamento
- Sichuan Provincial People's Hospital
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Contatto:
- Xiang Yang,, M.D
- Numero di telefono: +86-28-87393999
- Email: xiangyangttt@126.com
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Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
- Adulto
- Adulto più anziano
Accetta volontari sani
Metodo di campionamento
Popolazione di studio
Descrizione
Inclusion Criteria:
- Age 18 years or older with age-related cataract requiring bilateral phacoemulsification and intraocular lens (IOL) implantation
- Corneal astigmatism less than 0.75 D
- Good general health and willing to complete all postoperative follow-up visits
- Signed written informed consent
Exclusion Criteria:
- Previous ocular surgery or ocular trauma
- Coexisting ocular diseases affecting visual potential, such as corneal opacity, glaucoma, macular degeneration, or diabetic retinopathy
- Intraoperative or postoperative complications (e.g., posterior capsule rupture)
- Systemic diseases that may interfere with visual outcomes or follow-up compliance
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
Coorti e interventi
Gruppo / Coorte |
Intervento / Trattamento |
|---|---|
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Dual focus + Dual focus group
Patients undergoing bilateral implantation of dual-focus intraocular lenses in both eyes
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Bilateral phacoemulsification with bifocal intraocular lens implantation in both eyes.
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Dual focus + EDOF group
Patients undergoing bilateral implantation of a dual-focus intraocular lens in one eye and an Extended Depth of Focus (EDOF) lens in the contralateral eye
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Bilateral phacoemulsification with bifocal intraocular lens implantation in one eye and EDOF intraocular lens implantation in the contralateral eye.
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Dual focus + Single focus group
Patients undergoing bilateral implantation of a dual-focus intraocular lens in one eye and a monofocal intraocular lens in the contralateral eye.
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Bilateral phacoemulsification with bifocal intraocular lens implantation in one eye and monofocal intraocular lens implantation in the contralateral eye.
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Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
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Subjective Visual Adaptation Score (Multifocal Motor Adaptation Questionnaire, MMAQ)
Lasso di tempo: Preoperatively, and postoperatively at 1 week, 1 month, 3 months, and 6 months
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Assessed using the Multifocal Motor Adaptation Questionnaire (MMAQ), a custom-designed questionnaire developed by the research team to measure subjective visual adaptation and symptoms in patients following intraocular lens implantation.
Scores range from 0 to 100, with higher scores indicating higher levels of visual adaptation and satisfaction.
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Preoperatively, and postoperatively at 1 week, 1 month, 3 months, and 6 months
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Misure di risultato secondarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
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Total High-Order Aberrations (HOAs)
Lasso di tempo: Postoperatively at 1 month, 3 months, and 6 months
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Change in total high-order aberrations (3rd to 6th order RMS, measured in micrometers) from baseline to 1 month, 3 months, and 6 months postoperatively, evaluated using an ocular/corneal wavefront aberrometer under a standardized pupil diameter (e.g., 4.0 mm / 6.0 mm).
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Postoperatively at 1 month, 3 months, and 6 months
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Defocus Curve
Lasso di tempo: Postoperatively at 1 month, 3 months, and 6 months
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Visual acuity evaluated at varying lens powers ranging from +1.50 D to -4.00 D in 0.50 D steps to assess the range of clear vision
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Postoperatively at 1 month, 3 months, and 6 months
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Uncorrected Binocular Distance Visual Acuity (UDBVA)
Lasso di tempo: Preoperatively, and postoperatively at ,1 month, 3 months, and 6 months
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Change in uncorrected binocular distance visual acuity measured at 4 meters under photopic lighting conditions using standard Early Treatment Diabetic Retinopathy Study (ETDRS) visual acuity charts.
Lower LogMAR values indicate superior visual acuity.
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Preoperatively, and postoperatively at ,1 month, 3 months, and 6 months
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Spherical Aberration
Lasso di tempo: Postoperative 1 month, 3 months, and 6 months
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Change in spherical aberration ( Zernike coefficient, measured in micrometers) from baseline to 1 month, 3 months, and 6 months postoperatively, evaluated using an ocular/corneal wavefront aberrometer under a standardized pupil diameter (e.g., 4.0 mm / 6.0 mm).
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Postoperative 1 month, 3 months, and 6 months
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Horizontal Coma
Lasso di tempo: Postoperative 1 month, 3 months, and 6 months
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Change in horizontal coma ( Zernike coefficient, measured in micrometers) from baseline to 1 month, 3 months, and 6 months postoperatively, evaluated using an ocular/corneal wavefront aberrometer under a standardized pupil diameter (e.g., 4.0 mm / 6.0 mm).
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Postoperative 1 month, 3 months, and 6 months
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Vertical Coma
Lasso di tempo: Postoperative 1 month, 3 months, and 6 months
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Change in vertical coma Zernike coefficient, measured in micrometers) from baseline to 1 month, 3 months, and 6 months postoperatively, evaluated using an ocular/corneal wavefront aberrometer under a standardized pupil diameter (e.g., 4.0 mm / 6.0 mm).
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Postoperative 1 month, 3 months, and 6 months
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Total Coma RMS
Lasso di tempo: Postoperative 1 month, 3 months, and 6 months
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Change in total coma measured in micrometers) from baseline to 1 month, 3 months, and 6 months postoperatively, evaluated using an ocular/corneal wavefront aberrometer under a standardized pupil diameter (e.g., 4.0 mm / 6.0 mm).
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Postoperative 1 month, 3 months, and 6 months
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Uncorrected Binocular Intermediate Visual Acuity (UIBVA)
Lasso di tempo: Preoperatively, and postoperatively at 1 month, 3 months, and 6 months
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Change in uncorrected binocular intermediate visual acuity measured at 80 cm (and/or 66 cm) under photopic lighting conditions using standard Early Treatment Diabetic Retinopathy Study (ETDRS) visual acuity charts.
Lower LogMAR values indicate superior visual acuity.
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Preoperatively, and postoperatively at 1 month, 3 months, and 6 months
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Uncorrected Bincorrected Near Visual Acuity (UNBVA)
Lasso di tempo: Preoperatively, and postoperatively at 1 month, 3 months, and 6 months
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Change in uncorrected binocular near visual acuity measured at 40 cm under photopic lighting conditions ($85\ \text{cd/m}^2$) using standard Early Treatment Diabetic Retinopathy Study (ETDRS) visual acuity charts.
Lower LogMAR values indicate superior visual acuity.
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Preoperatively, and postoperatively at 1 month, 3 months, and 6 months
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Contrast Sensitivity
Lasso di tempo: Postoperative 1 month, 3 months, and 6 months
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Change in contrast sensitivity (logarithmic values) across standardized spatial frequencies (1.5, 3, 6, 12, and 18 cycles per degree) from baseline to 1 month, 3 months, and 6 months postoperatively.
Evaluated using a standardized contrast sensitivity chart (e.g., CSV-1000 or Optec 6500) under both photopic and mesopic lighting conditions (with and without glare).
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Postoperative 1 month, 3 months, and 6 months
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Collaboratori e investigatori
Investigatori
- Investigatore principale: Chao Qu, School of Medicine, University of Electronic Science and Technology of China
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Maggiori informazioni
Termini relativi a questo studio
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Termini MeSH pertinenti aggiuntivi
Altri numeri di identificazione dello studio
- SCCHEC-2024-425
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