Sonographic Evaluation of Optic Nerve Diameter (OND) In Diabetic and Non-Diabetic Subjects
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Abstract
Objective: To evaluate optic nerve diameter (OND) by using sonography in diabetic patients compared with healthy nondiabetic subjects.
Materials and Methods: A prospective cross sectional study conducted in department of Radiology & Imaging and Ophthalmology. BIRDEM General Hospital, Dhaka during the period of 1st january 2024 to 31st December 2025. There were 321 adult participants recruited to the study. Among them 163 Type 2 diabetic (DM II) patients and 158 apparently healthy, nondiabetic subjects. The OND was measured using a high-resolution dedicated ultrasound device. The ultrasound examinations were performed using a 10-MHz linear array transducer (Philips Affiniti 50). Subjects were examined in a supine position with their eyes closed. Three measurements of the OND were taken and the average recorded.
Results: The mean OND of the DM II patients was 3.12 ± 0.15 mm (range of 2.4–4.0 mm), which was significantly (P < .05) lower than the control subjects (4.24 ± 0.16 mm). Linear relationship between the duration of diabetic with optic nerve diameter was found.
Conclusion: The study concluded that diabetes affected the OND and it was significantly decreased than that in healthy controls .This imaging biomarker has the potential to transform visual care for DM II patients.