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The Emmetropization Via Accommodation (EVA) - II Study (EVA-II)

17. september 2026 opdateret af: Ohio State University

To determine if wearing a novel treatment during a 15-month period will enhance emmetropization in 4-month-old infants who have demonstrated poor ocular accommodation (eye focusing).

Studieoversigt

Status

Ikke rekrutterer endnu

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Uncorrected hyperopia (farsightedness) in children can lead to significant learning and visual problems, affecting their overall well-being and academic potential. Normally, infants are born with a moderate degree of hyperopia which should decrease as undergo a normal, developmental process called emmetropization, which mostly occurs during the first 18 months of life. Sometimes, this process fails, leaving children with higher-than-normal levels of hyperopia, which significantly increases their risk of developing conditions like strabismus (crossed eyes), amblyopia (lazy eye), and early literacy and scholastic issues. Infants who are at the greatest risk of not undergoing the normal emmetropization process are those with significantly higher levels of hyperopia early in infancy and those with poor ocular accommodation. The emmetropization process is not perfectly understood in human infants but may allow a window of opportunity for early intervention to help reduce the risk of debilitating vision conditions, while the visual system is still plastic. This study seeks to determine if early intervention, specifically partial refractive correction and visual engagement exercises (meant to stimulate ocular accommodation), can help improve the accommodative response and therefore reduce hyperopia in infants at high risk of not undergoing emmetropization. By treating 4-month-old infants with poor accommodation, the study aims to facilitate emmetropization and potentially reduce the risk of long-term visual problems. The study will also explore whether hyperopic defocus or accommodative effort is the primary signal guiding emmetropization, the two major theories of human emmetropization. Positive outcomes from this research could lead to new standards of care for hyperopic infants, potentially preventing a lifetime of vision-related issues and improving early literacy and academic performance.

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

52

Fase

  • Ikke anvendelig

Kontakter og lokationer

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

Studiekontakt

Studiesteder

    • Ohio
      • Columbus, Ohio, Forenede Stater, 43209
        • The Ohio State University College of Optometry
        • Kontakt:

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

2 måneder til 4 måneder (Barn)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • Signed parental permission and HIPAA authorization and willingness to comply with study procedures.
  • Infant 13-19 weeks of age at baseline.
  • Either sex and any race or ethnicity.
  • Good general health based on parent-provided history, normal pregnancy and delivery without serious complications, and birthweight >2500 g.
  • Mean MEM accommodative lag >+1.25 D based on three measurements throughout the baseline examination.
  • Cycloplegic spherical-equivalent hyperopia ≥+3.50 D in one or both eyes.

Exclusion Criteria:

  • Astigmatism >2.00 D in either eye.
  • Anisometropia >1.50 D spherical equivalent.
  • Strabismus.
  • Previous difficulty with pupil dilation.
  • Cardiac, liver, asthma, or other respiratory disease.
  • Ocular disease/abnormality, prior intraocular surgery, retinal detachment, optic nerve hypoplasia, malformation of the eye, cortical visual impairment, or active ocular inflammation.
  • Hydrocephalus, Down syndrome, cerebral palsy, severe developmental delay, or seizure disorder.
  • A condition preventing spectacle wear for the study duration (e.g., plagiocephaly).

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
Ingen indgriben: Observation

No treatment is administered in this arm.

Eksperimentel: Spectacles and At-Home Therapy

Participants will receive experimental treatment.

Infants will receive spectacles that have a prescription relative to the spherical equivalent in each eye as measured by the cycloplegic retinoscopy performed at baseline. Changes in spectacle lens power will be made as needed at follow-up visits to keep the level of under-correction within 0.50D from the study protocol. An experimental non-invasive treatment will be prescribed as well. Treatment will continue until study completion at 18 months of age or until the infant reaches a spherical equivalent refractive error of +2.00D or less hyperopia. Participants will also receive a non-invasive treatment to be used at home.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Ocular Accommodation measured with MEM
Tidsramme: 14 months

Change in accommodative lag (in Diopters), measured with Monocular Estimation Method (MEM).

14 months

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Correlation between refractive error and ocular accommodation measured with MEM
Tidsramme: 14 months

Refractive error will be measured using retinoscopy, in Diopters (D) and ocular accommodation will be measured with MEM retinoscopy, in Diopters (D)

14 months
Correlation between refractive error and ocular accommodation measured with PowerRefractor
Tidsramme: 14 months

Refractive error will be measured using retinoscopy, in Diopters (D) and ocular accommodation will be measured with the PlusOptix PowerRefractor, in Diopters (D)

14 months

Samarbejdspartnere og efterforskere

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

Sponsor

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 (Anslået)

1. april 2027

Primær færdiggørelse (Anslået)

30. juni 2031

Studieafslutning (Anslået)

30. juni 2032

Datoer for studieregistrering

Først indsendt

25. august 2026

Først indsendt, der opfyldte QC-kriterier

17. september 2026

Først opslået (Faktiske)

24. september 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

24. september 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

17. september 2026

Sidst verificeret

1. september 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • 20261737

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

UBESLUTET

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ingen

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ja

produkt fremstillet i og eksporteret fra U.S.A.

Ja

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 .