CorVision® 4-year Follow-up (CorVision4yFU)
Four Years Extended Follow-Up on CorVision® Bioengineered Corneal Microlens: Safety and Efficacy
Przegląd badań
Status
Status
Warunki
Warunki
Typ studiów
Typ studiów
Zapisy (Rzeczywisty)
Zapisy
Kontakty i lokalizacje
Lokalizacje studiów
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Zlín, Czechy, 760 01
- Gemini Eye Clinic
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Kryteria uczestnictwa
Kryteria kwalifikacji
Kryteria kwalifikacji
Wiek uprawniający do nauki
- Dziecko
- Dorosły
- Starszy dorosły
Akceptuje zdrowych ochotników
Metoda próbkowania
Badana populacja
Opis
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.
Plan studiów
Jak projektuje się badanie?
Szczegóły projektu
Liczba grup / kohort
Kohorty i interwencje
Grupa / KohortaGrupa / Kohorta |
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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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Co mierzy badanie?
Podstawowe miary wyniku
Podstawowe miary wyniku
Miara wyniku |
Opis środka |
Ramy czasowe |
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Uncorrected Near Visual Acuity of 0.3 logMAR or better
Ramy czasowe: 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
Ramy czasowe: 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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Miary wyników drugorzędnych
Miary wyników drugorzędnych
Miara wyniku |
Opis środka |
Ramy czasowe |
|---|---|---|
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Clinically significant corneal haze occurrence
Ramy czasowe: 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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Inne miary wyników
Inne miary wyników
Miara wyniku |
Opis środka |
Ramy czasowe |
|---|---|---|
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Monocular Uncorrected Near Visual Acuity at Best Reading Distance
Ramy czasowe: 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
Ramy czasowe: 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
Ramy czasowe: 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
Ramy czasowe: 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)
Ramy czasowe: 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
Ramy czasowe: 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)
Ramy czasowe: 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)
Ramy czasowe: 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
Ramy czasowe: 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
Ramy czasowe: 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
Ramy czasowe: 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)
Ramy czasowe: 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
Ramy czasowe: 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)
Ramy czasowe: 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)
Ramy czasowe: 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
Ramy czasowe: 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)
Ramy czasowe: 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)
Ramy czasowe: 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
Ramy czasowe: 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
Ramy czasowe: 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
Ramy czasowe: 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
Ramy czasowe: 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
Ramy czasowe: 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
Ramy czasowe: 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
Ramy czasowe: 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
Ramy czasowe: 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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Współpracownicy i badacze
Sponsor
Sponsor
Publikacje i pomocne linki
Daty zapisu na studia
Główne daty studiów
Rozpoczęcie studiów (Rzeczywisty)
Rozpoczęcie studiów
Zakończenie podstawowe (Rzeczywisty)
Zakończenie podstawowe
Ukończenie studiów (Rzeczywisty)
Ukończenie studiów
Daty rejestracji na studia
Pierwszy przesłany
Pierwszy przesłany
Pierwszy przesłany, który spełnia kryteria kontroli jakości
Pierwszy przesłany, który spełnia kryteria kontroli jakości
Pierwszy wysłany (Rzeczywisty)
Pierwszy wysłany
Aktualizacje rekordów badań
Ostatnia wysłana aktualizacja (Rzeczywisty)
Ostatnia wysłana aktualizacja
Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości
Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości
Ostatnia weryfikacja
Ostatnia weryfikacja
Więcej informacji
Terminy związane z tym badaniem
Słowa kluczowe
Dodatkowe istotne warunki MeSH
Inne numery identyfikacyjne badania
Inne numery identyfikacyjne badania
- CMG-PRT-002-1
Informacje o lekach i urządzeniach, dokumenty badawcze
Bada produkt leczniczy regulowany przez amerykańską FDA
Bada produkt urządzenia regulowany przez amerykańską FDA
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