Rotational Stability of the Acunex Vario Toric
Evaluation of the Rotational Stability of the Acunex Vario Toric Intraocular Lens
Efficacy of the rotational stability and astigmatism correction of a toric EDOF IOL, the Acunex Vario toric.
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljeret beskrivelse
Recent advances in cataract surgery technology have transformed the procedure from a purely vision-restoring approach into a procedure for correcting presbyopia. Patients' resulting higher expectations regarding freedom from spectacles have led to advances in intraocular lens (IOL) technology in recent years. The implantation of a standard monofocal IOL designed to achieve emmetropia results in a high level of patient satisfaction with regard to distance vision. However, spectacles are still required for intermediate and near vision.
One approach to achieving freedom from spectacles at all distances is the use of multifocal IOLs. Compared with monofocal IOLs, however, these lenses are more frequently associated with photic phenomena such as glare and halos, as well as reduced contrast sensitivity. Another approach to minimize the need for spectacles is the use of IOLs with extended depth of focus (EDOF). These lenses feature an extended distance focus range that extends into the intermediate range, thereby offering high visual quality across a continuous focus range. Unlike trifocal IOLs, which split the light into different focal points, the extended focus of these IOLs is designed to improve contrast perception in the intermediate range and reduce light-related phenomena.
Furthermore, residual corneal astigmatism is an important factor in achieving post-operative freedom from spectacles, and its correction is necessary to achieve the best possible visual performance. The most widely used and effective approach to correcting corneal astigmatism is the implantation of a toric IOL. To ensure that these lenses achieve the desired effect, they must be positioned precisely along the intended axis, as any rotation of a toric IOL can reduce its ability to correct astigmatism.
Particularly in the case of IOLs designed to correct presbyopia, such as trifocal or EDOF lenses, it is therefore important to correct corneal astigmatism in order to achieve the best possible post-operative visual outcome. The aim of this study is therefore to analyze the efficacy and rotational stability of a toric EDOF IOL (Acunex Vario toric, AN6VT).
38 eyes from 38 patients will be included into the study, into each eye an AN6VT IOL will be implanted. Follow-up examinations will take place 1 hour, 1 week after surgery on the first eye and 1 week after surgery on the second eye, and 4-6 months post-operatively.
Undersøgelsestype
Undersøgelsestype
Tilmelding (Anslået)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiekontakt
Studiekontakt
- Navn: Johannes Zeilinger, MD
- Telefonnummer: 57564 +43 1 91021
- E-mail: office@viros.at
Undersøgelse Kontakt Backup
- Navn: Oliver Findl, Prim. Prof. Dr.
- Telefonnummer: 57564 +43 1 91021
- E-mail: office@viros.at
Studiesteder
-
-
-
Vienna, Østrig, 1140
- Rekruttering
- Vienna Institute for Research in Ocular Surgery
-
Kontakt:
- Johannes Zeilinger, MD
- Telefonnummer: 57564 +43 1 91021
- E-mail: office@viros.at
-
Kontakt:
- Oliver Findl, Prim. Prof. Dr.
- Telefonnummer: 57564 +43 1 91021
- E-mail: office@viros.at
-
-
Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- Bilateral age-related cataract scheduled for cataract surgery
- Age 21 or older
- Predefined postoperative residual astigmatism to be < 0.5 D (calculated with Barrett total K toric calculator)
- Calculated IOL power within the range of the investigated IOL
- Pupil size ≥ 5 mm (in mydriasis)
- Willingness to comply with the postoperative follow-up examination schedule
- Written informed consent prior to surgery
Exclusion Criteria:
- Previous ocular surgery or trauma
- Extreme shallow anterior chamber
- Uncontrolled systemic or ocular disease
- Associated corneal pathologies (e.g., edema, scarring) or relevant other ophthalmic diseases that may result in altered visual outcome or lens stability (e.g., pseudoexfoliation syndrome, floppy iris syndrome, glaucoma, retinal disease)
- Concurrent participation in another clinical investigation
- Pregnancy or lactation (pregnancy test will be performed in women of reproductive age)
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: N/A
- Interventionel model: Enkelt gruppeopgave
- Maskning: Ingen (Åben etiket)
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
|
Eksperimentel: Acunex Vario toric
Patient will recieve the Acunex Vario IOL during cataract surgery |
The Acunex Vario toric IOL, toric EDOF IOL, will be implanted |
Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
IOL axis rotation
Tidsramme: 12 monthes
|
The IOL axis rotation before and after cataract surgery will be analyzed with retroillumination photographs |
12 monthes
|
Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Distance visual acuity
Tidsramme: 12 months
|
Uncorrected and corrected distance visual acuity before and after cataract surgery will be determined using ETDRS-charts in a distance of 4 metres |
12 months
|
|
Intermediate visual acuity
Tidsramme: 12 months
|
Uncorrected and corrected intermediate visual acuity before and after cataract surgery will be determined using ETDRS-charts in a distance of 66 centimetres |
12 months
|
|
Refraction
Tidsramme: 12 months
|
Refraction before and after cataract surgery will be determined using trial frame glasses and Jackson cross cylinders |
12 months
|
Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Efterforskere
Efterforskere
- Ledende efterforsker: Oliver Findl, Prim. Prof. Dr., Vienna Institute for Research in Ocular Surgery
Datoer for undersøgelser
Studer store datoer
Studiestart (Faktiske)
Studiestart
Primær færdiggørelse (Anslået)
Primær færdiggørelse
Studieafslutning (Anslået)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- Acunex Vario toric
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
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