- ICH GCP
- Registro de ensaios clínicos dos EUA
- Ensaio Clínico NCT01729962
Comparative Study of the Optical Biometer for Measurements of the Eye
Comparative Study of the Optical Biometer for the Measurements of Axial Length, Anterior Chamber Depth, Keratometry, Corneal Cylinder Axis, Corneal Thickness, White-to-White Distance, and Pupil Diameter
Visão geral do estudo
Status
Descrição detalhada
Tipo de estudo
Inscrição (Real)
Contactos e Locais
Locais de estudo
-
-
North Carolina
-
Greensboro, North Carolina, Estados Unidos, 27410-2548
- Physicians Protocol
-
-
Critérios de participação
Critérios de elegibilidade
Idades elegíveis para estudo
Aceita Voluntários Saudáveis
Gêneros Elegíveis para o Estudo
Método de amostragem
População do estudo
Descrição
Inclusion Criteria:
- Subjects who can follow the instructions by the Principal/Clinical Investigator or clinical staff at the clinical site, and can visit on scheduled examination dates.
- Subjects who sign an informed consent form to participate in the clinical trial.
- Subjects who agree to take the qualifying eye examination and a series of devices measurements.
- Subjects able to fixate on a target.
Subjects must meet at lease one of the following criteria:
- Normal eyes: Subjects with a natural lens without a cataract, corneal abnormalities or prior keratorefractive surgery.
- Eyes with Cataracts: Subjects with a pre-existing cataract without corneal abnormalities or prior keratorefractive surgery.
- Eyes without a Natural Lens: Subjects that are pseudophakic or aphakic without corneal abnormalities or prior keratorefractive surgery.
- Eyes with Corneal Abnormality: Subjects with a corneal abnormality and a natural lens without a cataract, or Subjects post keratorefractive surgery and a natural lens without a cataract.
Exclusion Criteria:
- Pregnancy.
- Any eye condition preventing use of any of the instruments used in the study.
- Any eye condition which might impair the validity of results from any of the instruments used in the study.
- Any medical condition, which, in the Investigator's judgment, interferes with the subject's ability to comply with the protocol, compromises subject safety, or interferes with the interpretation of the study results.
Plano de estudo
Como o estudo é projetado?
Detalhes do projeto
Coortes e Intervenções
Grupo / Coorte |
|---|
|
Agreement Cohort
All subjects in the agreement portion of the study will have a single measurement performed with each device, the Nidek optical biometer, predicate device and ultrasound reference device.
Each device will be operated by a different operator.
|
|
Precision Cohort
All subjects in the precision portion of the study will each be paired with one Nidek optical biometer and with one predicate device for a total of three Nidek optical biometer/predicate device pairs.
Each of the three device pairs will be designated one and only one operator.
All subjects in the precision portion of the study will have their measurements repeated three times on each of three Nidek optical biometer and predicate device pairs.
|
O que o estudo está medindo?
Medidas de resultados primários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
|
Agreement and Precision Endpoints Analyses
Prazo: Subjects will be followed for the duration of the procedure, up to one day.
|
The agreement of the Nidek optical biometer with the predicate device will be assessed for the following measures:
In addition, the agreement of the Nidek optical biometer with the ultrasound reference device will be assessed for axial length and anterior chamber depth. The precision of Nidek optical biometer and the predicate device will be assessed for the following measures:
|
Subjects will be followed for the duration of the procedure, up to one day.
|
Medidas de resultados secundários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
|
Evaluation of Adverse Events Found During the Study
Prazo: Subjects will be followed for the duration of the procedure, up to one day.
|
The safety endpoint is to evaluate any adverse events associated with the Nidek optical biometer or the predicate or reference devices.
|
Subjects will be followed for the duration of the procedure, up to one day.
|
Outras medidas de resultado
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
|
Additional Analyses for the Agreement Portion of the Study
Prazo: Subjects will be followed for the duration of the procedure, up to one day.
|
Additional analyses will examine the intraocular lens (IOL) power calculation from the Nidek optical biometer only based on the subjects enrolled in the agreement portion of the study.
|
Subjects will be followed for the duration of the procedure, up to one day.
|
Colaboradores e Investigadores
Patrocinador
Investigadores
- Investigador principal: Karl G Stonecipher, M.D., Physicians Protocol
Datas de registro do estudo
Datas Principais do Estudo
Início do estudo
Conclusão Primária (Real)
Conclusão do estudo (Real)
Datas de inscrição no estudo
Enviado pela primeira vez
Enviado pela primeira vez que atendeu aos critérios de CQ
Primeira postagem (Estimativa)
Atualizações de registro de estudo
Última Atualização Postada (Estimativa)
Última atualização enviada que atendeu aos critérios de controle de qualidade
Última verificação
Mais Informações
Termos relacionados a este estudo
Termos MeSH relevantes adicionais
Outros números de identificação do estudo
- AL-3
Essas informações foram obtidas diretamente do site clinicaltrials.gov sem nenhuma alteração. Se você tiver alguma solicitação para alterar, remover ou atualizar os detalhes do seu estudo, entre em contato com register@clinicaltrials.gov. Assim que uma alteração for implementada em clinicaltrials.gov, ela também será atualizada automaticamente em nosso site .
Ensaios clínicos em Catarata
-
RxSight, Inc.Inscrevendo-se por convite
-
Adaptilens, Inc.Ainda não está recrutandoAphakia Cataract