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Extent of ILM Removal and Its Impact on Outcomes of MH Surgery

5. januar 2016 opdateret af: Samsung Medical Center

Extent of Internal Limiting Membrane Removal and Its Impact on Outcomes of Macular Hole Surgery

Eligible patients who were scheduled for surgery for idiopathic macular hole (MH) were equally randomized to small extent group or large extent group depending on the extent of internal limiting membrane (ILM) to be removed. The ILM was peeled in round shape with the radius of either 0.75-disc diameter or 1.5-disc diameter according to the group. The primary analysis was conducted to identify the difference of functional and anatomical outcomes between the two groups. Subsequent analysis was performed to reveal the relationship between the functional and anatomical outcomes.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

This randomized clinical trial was performed at a single center. Patients who were scheduled for surgery for idiopathic macular hole (MH) were enrolled. Eligible patients were equally randomized to small extent group or large extent group depending on the extent of ILM to be removed. Random numbers were generated through computerized block-randomization.

A standard 3-port pars plana vitrectomy was performed by a single surgeon using 23-gauge vitrectomy system, with a 1-step scleral tunnel incision. After posterior vitreous detachment was achieved, peeling of the ILM was performed by an end gripping forceps with the assistance of indocyanine green dye. The ILM was peeled in round shape with the radius of either 0.75-disc diameter or 1.5-disc diameter centering at the center of the MH according to the pre-assigned group. This was followed by a complete fluid-gas exchange, and all patients were encouraged to maintain a face-down position for at least 5 days postoperatively.

Postoperative measurements of BCVA and M-score were conducted at 2- and 6-month follow-up visits by independent masked observers. The first postoperative SD-OCT scanning was usually conducted at 1 to 2 weeks after operation according to the intraocular gas status. Then, OCT scans were conducted at follow-up visits 2, and 6 months postoperatively. The same experienced examiner conducted all the OCT scans on all subjects.

Comparison of anatomical closure, BCVA, M-score, Δ BCVA, and Δ M-score were primarily performed between the two groups. Then, the parameters measured from OCT scans with changes in ETDRS visual acuity and M-score were analyzed.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

65

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

20 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • idiopathic macular hole

Exclusion Criteria:

  • macular hole associated with other causative diseases

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Enkelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Aktiv komparator: Small Extent Group (SG)
Patients who were scheduled for surgery for idiopathic macular hole were randomly assigned to the SG. The small-extent peeling was performed in SG.
Procedure: small-extent peeling
The internal limiting membrane was peeled in round shape with the radius of 0.75-disc diameter radius (1.5-disc diameter in total) centering at the center of the macular hole.
Aktiv komparator: Large Extent Group (LG)
Patients who were scheduled for surgery for idiopathic macular hole were randomly assigned to the LG. The large-extent peeling was performed in LG.
Procedure: large-extent peeling
The internal limiting membrane was peeled in round shape with the radius of 1.5-disc diameter radius (3.0-disc diameter in total) centering at the center of the macular hole.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Tidsramme
Degree of foveal elongation
Tidsramme: postoperative 6months
postoperative 6months

Sekundære resultatmål

Resultatmål
Tidsramme
metamorphopsia
Tidsramme: 6months
6months

Andre resultatmål

Resultatmål
Tidsramme
ændring i synsstyrken
Tidsramme: 6 måneder
6 måneder

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Samsung Medical Center

Efterforskere

  • Ledende efterforsker: Kunho Bae, MD, Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart

1. juli 2013

Primær færdiggørelse (Faktiske)

1. oktober 2015

Studieafslutning (Faktiske)

1. november 2015

Datoer for studieregistrering

Først indsendt

9. december 2013

Først indsendt, der opfyldte QC-kriterier

11. december 2013

Først opslået (Skøn)

12. december 2013

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Skøn)

7. januar 2016

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

5. januar 2016

Sidst verificeret

1. januar 2016

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • 2013-07-083

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

Kliniske forsøg med Macula huller

Kliniske forsøg med small-extent peeling

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Sponsorer og samarbejdspartnere

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Betingelser

Sjældne sygdomme

Narkotikainterventioner

Kosttilskud

Sponsor / samarbejdspartnere

Placeringer

Abonner