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The effect of vitamin D supplementation along with intravitreal injection of bevacizumab in the treatment of patients with diabetic macular edema

The effect of vitamin D supplementation along with intravitreal injection of bevacizumab in the treatment of patients with diabetic macular edema and vitamin D deficiency

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
IRCT
Registry ID
IRCT20240411061466N1
Enrollment
128
Registered
2024-04-16
Start date
2024-06-15
Completion date
Unknown
Last updated
2024-05-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Diabetic Retinopathy. Retinal disorders in diseases classified elsewhere

Interventions

Intervention 1: Intervention group: Vitamin D supplement with a dose of 50,000 units weekly (D-Vigel 50,000 IU, Daana Pharmaceutical company, Iran). Intervention 2: Control group: receive placebo medi

Sponsors

Kerman University of Medical Sciences
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 75 Years

Inclusion criteria

Inclusion criteria: Patients with type 2 diabetes and diabetic macular edema Age 18 and above The central thickness of the macula is higher than 300 µm Serum Vitamin D level less than 30 ng/ml

Exclusion criteria

Exclusion criteria: History of any eye surgery other than uncomplicated cataract surgery at least six months ago History of intravitreal injection of bevacizumab and other anti-VEGF (vascular endothelial growth factor) drugs and steroids during the last three months. History of retinal vascular events History of macular traction , the presence of macular disease due to a cause other than diabetes History of thyroiditis in women, pregnant and lactating women Taking vitamin D supplements at the time of entering the study Severe vitamin D deficiency less than 10 ng/ml Hypercalcemia Hyperphosphatemia Serum creatinine is more than 3 mg/dl

Design outcomes

Primary

MeasureTime frame
Central macular thickness. Timepoint: Before the intervention, one month, 2 months and 3 months after the intervention. Method of measurement: Central thickness of the macula measurement with Optical Coherence Tomography.

Secondary

MeasureTime frame
Distance corrected visual aquity. Timepoint: Before the intervention, one month, 2 months, 3 months after the intervention. Method of measurement: Visual acuity E chart.

Countries

Iran (Islamic Republic of)

Contacts

Public ContactArash Daneshtalab

Kerman University of Medical Sciences

a.daneshtalab@kmu.ac.ir+98 34 3211 5780

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 4, 2026