CorVision® 4-year Follow-up (CorVision4yFU)
Four Years Extended Follow-Up on CorVision® Bioengineered Corneal Microlens: Safety and Efficacy
Studienübersicht
Status
Status
Bedingungen
Bedingungen
Studientyp
Studientyp
Einschreibung (Tatsächlich)
Einschreibung
Kontakte und Standorte
Studienorte
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Zlín, Tschechien, 760 01
- Gemini Eye Clinic
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Teilnahmekriterien
Zulassungskriterien
Zulassungskriterien
Studienberechtigtes Alter
- Kind
- Erwachsene
- Älterer Erwachsener
Akzeptiert gesunde Freiwillige
Probenahmeverfahren
Studienpopulation
Beschreibung
Inclusion Criteria:
- Subjects must have undergone implantation of CorVision microlens under study protocol CMG-PRT-002.
- Provide informed consent
- Willing to participate in the ophthalmological examinations
Exclusion Criteria:
- Patients with severe ocular or general disorders that would prevent them from completed the visit.
- Patients not being able to understand and give informed consent.
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
Anzahl der Gruppen / Kohorten
Kohorten und Interventionen
Gruppe / KohorteGruppe / Kohorte |
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Post-presbyopia correction with unilaterally implanted microlens
Presbyopic patients who have undergone implantation of the CorVision microlens according to study protocol CMG-PRT-002.
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Was misst die Studie?
Primäre Ergebnismessungen
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
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Uncorrected Near Visual Acuity of 0.3 logMAR or better
Zeitfenster: At least 4 years after the implantation
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More than 65% of the eyes should have an Uncorrected Near Visual Acuity (UNVA) of 0.3 logMAR or better at 4 years postoperatively.
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At least 4 years after the implantation
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Implant removal
Zeitfenster: At least 4 years after the implantation
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The incidence of implant rejection leading to implant removal should occur in no more than 3% of implanted eyes.
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At least 4 years after the implantation
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Sekundäre Ergebnismessungen
Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
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Clinically significant corneal haze occurrence
Zeitfenster: At least 4 years after the implantation
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Clinically significant corneal haze is defined as any new stromal clouding in or near the laser-created pocket that leads to a reduction in central corneal clarity/transparency, is visible upon slit-lamp examination, and is graded as ≥ 2 on a standardized corneal haze grading scale.
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At least 4 years after the implantation
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Andere Ergebnismessungen
Andere Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
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Monocular Uncorrected Near Visual Acuity at Best Reading Distance
Zeitfenster: At least 4 years after the implantation
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Change in monocular uncorrected near visual acuity and best reading distance over time
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At least 4 years after the implantation
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Monocular and Binocular Uncorrected Near Visual Acuity at 40 cm
Zeitfenster: At least 4 years after the implantation
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Change in monocular and binocular Uncorrected Near Visual Acuity (UNVA) at 40 cm.
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At least 4 years after the implantation
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Monocular and Binocular Distance Corrected Near Visual Acuity
Zeitfenster: At least 4 years after the implantation
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Change in monocular and binocular Distance Corrected Near Visual Acuity (DCNVA).
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At least 4 years after the implantation
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Monocular and Binocular Corrected Near Visual Acuity
Zeitfenster: At least 4 years after the implantation
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Change in monocular and binocular Corrected Near Visual Acuity (CNVA) over time.
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At least 4 years after the implantation
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Monocular and Binocular Uncorrected Intermediate Visual Acuity (UIVA)
Zeitfenster: At least 4 years after the implantation
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Change in monocular and binocular Uncorrected Intermediate Visual Acuity (UIVA) over time.
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At least 4 years after the implantation
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Monocular and Binocular Distance Corrected Intermediate Visual Acuity
Zeitfenster: At least 4 years after the implantation
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Change in monocular and binocular Distance Corrected Intermediate Visual Acuity (DCIVA) over time.
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At least 4 years after the implantation
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Monocular and Binocular Uncorrected Distance Visual Acuity (UDVA)
Zeitfenster: At least 4 years after the implantation
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Change in monocular Uncorrected Distance Visual Acuity (UDVA) over time.
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At least 4 years after the implantation
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Monocular and Binocular Corrected Distance Visual Acuity (CDVA)
Zeitfenster: At least 4 years after the implantation
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Change in monocular and binocular Corrected Distance Visual Acuity (CDVA) over time.
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At least 4 years after the implantation
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Objective refraction
Zeitfenster: At least 4 years after the implantation
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Change in objective refractive sphere and cylinder magnitude measured by autorefractometry.
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At least 4 years after the implantation
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Subjective refraction
Zeitfenster: At least 4 years after the implantation
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Change in manifest refractive sphere and cylinder magnitude, measured in diopters (D).
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At least 4 years after the implantation
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Near addition
Zeitfenster: At least 4 years after the implantation
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Change in near addition values over time.
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At least 4 years after the implantation
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Corneal Keratometry Measurements (K1, K2, and Kmean)
Zeitfenster: At least 4 years after the implantation
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Change in corneal keratometry values, including K1, K2, and mean keratometry (Kmean), as measured by corneal topography over time. Change in keratometry K1, K2 and Kmean measured in diopters over time. |
At least 4 years after the implantation
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Central Corneal Thickness (Pachymetry) Measurement
Zeitfenster: At least 4 years after the implantation
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Change in central corneal thickness as measured by corneal pachymetry over time.
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At least 4 years after the implantation
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Endothelial Cell Density (Study Eye)
Zeitfenster: At least 4 years after the implantation
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Change in endothelial cell density over time.
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At least 4 years after the implantation
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Intraocular Pressure (Study Eye)
Zeitfenster: At least 4 years after the implantation
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Change in intraocular pressure over time.
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At least 4 years after the implantation
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Tear Film Break-Up Time (TBUT) Test
Zeitfenster: At least 4 years after the implantation
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Change in tear film stability as measured by Tear Film Break-Up Time (TBUT) in units of seconds.
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At least 4 years after the implantation
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Tear Production (Schirmer Test)
Zeitfenster: At least 4 years after the implantation
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Change in tear production as measured by the Schirmer test in units of mm.
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At least 4 years after the implantation
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Corneal Thickness Measurement Using Optical Coherence Tomography (OCT)
Zeitfenster: At least 4 years after the implantation
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Change in corneal thickness measured at the corneal center in μm.
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At least 4 years after the implantation
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Abnormal findings at OCT
Zeitfenster: At least 4 years after the implantation
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Incidence of abnormal findings on OCT.
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At least 4 years after the implantation
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Slit-lamp findings
Zeitfenster: At least 4 years after the implantation
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Incidence of abnormal slit lamp findings (eyelid, conjunctiva, epithelium, stroma, central cornea clarity, cornea neovascularization, anterior chamber, iris, lens).
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At least 4 years after the implantation
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Contrast sensitivity
Zeitfenster: At least 4 years after the implantation
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Determination of contrast sensitivity measured by CSV 1000 (Vector Vision) (changes from the pre-operative to the post-operative state and its stability over time will be investigated).
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At least 4 years after the implantation
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Defocus curve
Zeitfenster: At least 4 years after the implantation
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Change in visual acuity measured at different defocus vergence levels during monocular defocus curve testing over time.
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At least 4 years after the implantation
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Aberrometry measurements using iTrace
Zeitfenster: At least 4 years after the implantation
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Change in the total higher order aberrations (HOA) assessed by iTrace.
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At least 4 years after the implantation
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Subjective questionnaire QoV - patient satisfaction
Zeitfenster: At least 4 years after the implantation
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Evaluation of patient satisfaction assessed on a scale
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At least 4 years after the implantation
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Subjective questionnaire QoV
Zeitfenster: At least 4 years after the implantation
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Evaluation of patient satisfaction as assessed using the Quality of Vision (QoV) questionnaire scoring scale.
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At least 4 years after the implantation
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Adverse events incidence
Zeitfenster: At least 4 years after the implantation
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Intraoperative and adverse events at each time point (numbers and percentages)
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At least 4 years after the implantation
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Mitarbeiter und Ermittler
Sponsor
Sponsor
Publikationen und hilfreiche Links
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn (Tatsächlich)
Studienbeginn
Primärer Abschluss (Tatsächlich)
Primärer Abschluss
Studienabschluss (Tatsächlich)
Studienabschluss
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Tatsächlich)
Zuerst gepostet
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Tatsächlich)
Letztes Update gepostet
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Zusätzliche relevante MeSH-Bedingungen
Andere Studien-ID-Nummern
Andere Studien-ID-Nummern
- CMG-PRT-002-1
Arzneimittel- und Geräteinformationen, Studienunterlagen
Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt
Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt
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