- ICH GCP
- Registr klinických studií v USA
- Klinická studie 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
Přehled studie
Postavení
Podmínky
Detailní popis
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.
Typ studie
Zápis (Odhadovaný)
Kontakty a umístění
Studijní kontakt
- Jméno: Xiangjun Fu, Ph.D.
- Telefonní číslo: +86-28-87393999
- E-mail: 243981469@qq.com
Studijní místa
-
-
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Chengdu, Čína
- Nábor
- Sichuan Provincial People's Hospital
-
Kontakt:
- Xiang Yang,, M.D
- Telefonní číslo: +86-28-87393999
- E-mail: xiangyangttt@126.com
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-
Kritéria účasti
Kritéria způsobilosti
Věk způsobilý ke studiu
- Dospělý
- Starší dospělý
Přijímá zdravé dobrovolníky
Metoda odběru vzorků
Studijní populace
Popis
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
Studijní plán
Jak je studie koncipována?
Detaily designu
Kohorty a intervence
Skupina / kohorta |
Intervence / Léčba |
|---|---|
|
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.
|
|
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.
|
|
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.
|
Co je měření studie?
Primární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
|
Subjective Visual Adaptation Score (Multifocal Motor Adaptation Questionnaire, MMAQ)
Časové okno: Preoperatively, and postoperatively at 1 week, 1 month, 3 months, and 6 months
|
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.
|
Preoperatively, and postoperatively at 1 week, 1 month, 3 months, and 6 months
|
Sekundární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
|
Total High-Order Aberrations (HOAs)
Časové okno: Postoperatively at 1 month, 3 months, and 6 months
|
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
|
|
Defocus Curve
Časové okno: 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)
Časové okno: 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
|
|
Spherical Aberration
Časové okno: Postoperative 1 month, 3 months, and 6 months
|
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
|
|
Horizontal Coma
Časové okno: Postoperative 1 month, 3 months, and 6 months
|
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
Časové okno: Postoperative 1 month, 3 months, and 6 months
|
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
|
|
Total Coma RMS
Časové okno: Postoperative 1 month, 3 months, and 6 months
|
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)
Časové okno: 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)
Časové okno: Preoperatively, and postoperatively at 1 month, 3 months, and 6 months
|
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
Časové okno: 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
|
Spolupracovníci a vyšetřovatelé
Vyšetřovatelé
- Vrchní vyšetřovatel: Chao Qu, School of Medicine, University of Electronic Science and Technology of China
Termíny studijních záznamů
Hlavní termíny studia
Začátek studia (Aktuální)
Primární dokončení (Odhadovaný)
Dokončení studie (Odhadovaný)
Termíny zápisu do studia
První předloženo
První předloženo, které splnilo kritéria kontroly kvality
První zveřejněno (Aktuální)
Aktualizace studijních záznamů
Poslední zveřejněná aktualizace (Aktuální)
Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality
Naposledy ověřeno
Více informací
Termíny související s touto studií
Klíčová slova
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