Diabetic Retinopathy Clinical Trial
Official title:
Retinal Neurodegenerative and Vascular Changes in Diabetic Patients: an OCT-based Comparative Study
NCT number | NCT04637217 |
Other study ID # | U1111-1249-7228 |
Secondary ID | |
Status | Completed |
Phase | |
First received | |
Last updated | |
Start date | July 1, 2018 |
Est. completion date | July 1, 2019 |
Verified date | November 2020 |
Source | Iuliu Hatieganu University of Medicine and Pharmacy |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Observational |
Using Optical Coherence Tomography and ImageJ software the investigators will analyze retinal and choroidal vascular changes and their impact on retinal layers among patients with diabetes without retinopathy and patients with diabetes and retinopathy.
Status | Completed |
Enrollment | 97 |
Est. completion date | July 1, 2019 |
Est. primary completion date | July 1, 2019 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | All |
Age group | N/A and older |
Eligibility | Inclusion Criteria: - history of type 1DM for more than 1 year - history of type 2 DM for more than 3 months - diagnosis of no DR or mild Non-proliferative diabetic retinopathy(NPDR) Exclusion Criteria: - DR with more than NPDR , - Diabetic macular oedema, - media opacities such as corneal or lens opacities that could preclude appropriate OCT imaging, - presence of other retinal diseases such as Age-related macular degeneration, Vitreo-macular traction, Macular hole, Epiretinal membrane, Retinal vein occlusion, Macular scars, - Glaucoma, Optic neuropathies or Neurodegenerative diseases, - history of ocular trauma, - Refractive errors of more than ±6 diopters (spherical equivalent), - previous ocular surgery, focal laser, panretinal photocoagulation or anti-VEGF intravitreal injection |
Country | Name | City | State |
---|---|---|---|
Romania | University of Medicine and Pharmacy " Iuliu Hatieganu" | Cluj-Napoca |
Lead Sponsor | Collaborator |
---|---|
Iuliu Hatieganu University of Medicine and Pharmacy |
Romania,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Correlation between choroid and outer retina using SD-OCT- based binarization technique | starting from EDI-OCT scans the investigators will analyze choroidal parameters such as Luminal area, Stromal area, Total choroidal area, Chorodial vascularity index and correlate them with retinal pigment epithelium (RPE),outer nuclear layer(ONL) and photoreceptors' thickness (PR) | 2018-2019 | |
Primary | Correlation between neurodegeneration and retinal vessels characteristics | using full width at half maximum method, the investigators will measure peripapillary arteries and veins' diameters, their wall thickness and correlate them with RNFL and ganglion cell layer(GCL) thickness | 2018-2019 | |
Secondary | Correlation between choroidal parameters and their influence on Best corrected visual acuity(BCVA) | The investigators will analyze if changes in the choroid will influence patients' visual acuity. For statistical reasons, visual acuity will be converted to logMAR(logarithm of the minimum angle of resolution) | 2018-2019 | |
Secondary | Correlation between renal function and choroidal parameters | Using estimated glomerular filtration rate(eGFR-mL/min/1.73 m2) the investigators will analyze if a decreased eGFR will produce changes in choroidal architecture | 2018-2019 | |
Secondary | Correlation between sistemic factors and choroidal parameters | The investigators will document if the presence of High Blood pressure(yes/no) and current smoking(yes/no) influences choroidal thickness or CVI. | 2018-2019 | |
Secondary | Correlation between choroidal parameters and diabetes control | Using HbA1c(Glycated haemoglobin) the investigators will analyze the choroidal's behaviour under different HbA1c levels. | 2018-2019 |
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