Меню
Набор скоро начнётся NCT06272851

Measuring Choroidal Thickness Using Optical Coherence Tomography

— Наблюдательное Choroid Disease Diabetes Mellitus

Ориентир для пациента и семьи

Простыми словами

Автоматическая сводка по структурированным данным реестра. Она помогает сориентироваться, но не заменяет официальный протокол или оценку врача.

Что изучают
В протоколе указаны: optical coherence tomography.
Кому может быть актуально
Состояния в реестре: Choroid Disease, Diabetes Mellitus. Базовые параметры: 30 лет — 95 лет · Все.
Что важно проверить
Возраст, диагноз и пол — только базовые ориентиры. Предыдущее лечение, анализы и другие обязательные условия указаны ниже в критериях участия.
Где проводится
Список центров уточняется — проверьте первичный протокол.
Следующий шаг
Сохраните исследование, покажите его лечащему врачу и уточните актуальный статус у исследовательского центра. Расходы, документы и поездка →

Не всё понятно в терминах? Прочитайте наш гид для пациентов →

Официальное название

Comparing the Choroidal Thickness Using Optical Coherence Tomography Between the Eyes of Healthy Individuals and Diabetic Patients Without Retinopathy

Обзор

To compare the choroidal thickness in eyes of diabetic patients with eyes of age matched controls using optical coherence tomography.

Подробное описание

Diabetic retinopathy (DR) is the most common and specific complication of DM. It is one of the leading causes of preventable blindness in the adult working population. (1) DR was the fifth leading cause of blindness and of moderate and severe vision impairment.

Global prevalence of diabetic retinopathy was 22.27% and prevalence was highest in Africa (35.90%). (1)

Fortunately, much of the visual loss from DR is preventable, and the rates of vision loss from diabetes and DR have declined over the past few decades due to advances in ocular disease assessment, screening, imaging and treatment in recent years. (2)

The outer third of the retina gets oxygen and nutrients from choroid. The three vascular layers of choroid are chorio capillaries layer, Sattler layer and Haller layer. (3)

A healthy choroid is essential for retinal function by continuous perfusion into the outer retina, which plays critical roles in thermoregulation of the retina, maintenance of the anatomic position of the retina, removal of residues, and secretion of growth factors. (4-5)

The vascular choroid changes of the diabetic patients are quite similar to those seen in DR, such as increased vascular tortuosity, vascular outpouchings, microaneurysms, nonperfusion areas, vascular dilations and narrowing, and choroidal neovascularization. (6)

Until recently, the choroid could only be evaluated by indocyanine green angiography, laser Doppler flowmetry, and ultrasonography. (6) Optical coherence tomography (OCT) is a non-invasive imaging modality, which is used in acquiring high-resolution sections of retina. (5)

Вмешательства

  • Устройство optical coherence tomography
    measuring choroidal thickness using optical coherence tomography

Первичные конечные точки

  • comparison between choroidal thickness [Срок оценки: 2 years]

Критерии участия

Критерии включения

  • All known Type 2 DM patients aged 30 to 95 years either gender who presented to ophthalmology clinics in Assuit ophthalmology hospital with no history of ocular treatment (ocular treatment naïve) and visual acuity of 0.1 (6/60) or more that are able to complete an eye examination, and non-diabetic healthy individuals (HbA1c <7) will be included in the study.

Критерии исключения

  • Known diagnosis of any other retinal disease, glaucoma, neurodegenerative disease, and any significant media opacities that precluded fundus imaging and not giving consent will be excluded.

Критерии приведены из реестра в оригинале (на английском). Окончательную оценку соответствия проводит исследовательский центр.

Здоровые добровольцы: Да

Дизайн исследования

Модель наблюдения
Когортное

Центры проведения

Список центров уточняется — проверьте первичный протокол.

Публикации

  • Teo ZL, Tham YC, Yu M, Chee ML, Rim TH, Cheung N, Bikbov MM, Wang YX, Tang Y, Lu Y, Wong IY, Ting DSW, Tan GSW, Jonas JB, Sabanayagam C, Wong TY, Cheng CY. Global Prevalence of Diabetic Retinopathy and Projection of Burden through 2045: Systematic Review and Meta-analysis. Ophthalmology. 2021 Nov;128(11):1580-1591. doi: 10.1016/j.ophtha.2021.04.027. Epub 2021 May 1. PMID 33940045
  • Tan TE, Wong TY. Diabetic retinopathy: Looking forward to 2030. Front Endocrinol (Lausanne). 2023 Jan 9;13:1077669. doi: 10.3389/fendo.2022.1077669. eCollection 2022. PMID 36699020
  • Hassan H, Cheema A, Tahir MA, Nawaz HN. Comparison of choroidal thickness in eyes of diabetic patients with eyes of healthy individuals using optical coherence tomography in a tertiary care hospital. Pak J Med Sci. 2022 Jan-Feb;38(1):254-260. doi: 10.12669/pjms.38.1.4443. PMID 35035435
  • Endo H, Kase S, Saito M, Yokoi M, Takahashi M, Ishida S, Kase M. Choroidal Thickness in Diabetic Patients Without Diabetic Retinopathy: A Meta-analysis. Am J Ophthalmol. 2020 Oct;218:68-77. doi: 10.1016/j.ajo.2020.05.036. Epub 2020 Jun 20. PMID 32574782
  • Regatieri CV, Branchini L, Carmody J, Fujimoto JG, Duker JS. Choroidal thickness in patients with diabetic retinopathy analyzed by spectral-domain optical coherence tomography. Retina. 2012 Mar;32(3):563-8. doi: 10.1097/IAE.0b013e31822f5678. PMID 22374157
  • Tavares Ferreira J, Vicente A, Proenca R, Santos BO, Cunha JP, Alves M, Papoila AL, Abegao Pinto L. CHOROIDAL THICKNESS IN DIABETIC PATIENTS WITHOUT DIABETIC RETINOPATHY. Retina. 2018 Apr;38(4):795-804. doi: 10.1097/IAE.0000000000001582. PMID 28267113

Идентификаторы

NCT: NCT06272851 · Choroidal thickness by OCT

Первоисточники (государственные реестры)

Открыть это исследование на ClinicalTrials.gov ↗