This study evaluates the corneal features using anterior segment - optical coherence tomography in patients affected by type 2 diabetes mellitus

To investigate the potential role of anterior segment-optical coherence tomography (AS-OCT) in identifying the corneal changes (in particular in total corneal, epithelial and stromal thicknesses) in patients affected by type 2 diabetes mellitus, without signs of diabetic retinopathy at fundus examination.

The AS-OCT could represents a valid early biomarker in these patients.

Inclusion Criteria:

• age older than 50 years
• diagnosis of previous type 2 diabetes mellitus
• absence of signs of diabetic retinopathy
• absence of previous ocular surgery, congenital eye disease, high myopia (>6 dioptres), actual or previous diagnosis of glaucoma, optic disc anomaly, macular or vitreoretinal diseases.
• absence of significant lens opacities, low-quality OCT and OCT-A images

Exclusion Criteria:

• age younger than 50 years
• absence of previous diagnosis of type 2 diabetes mellitus
• presence of signs of diabetic retinopathy
• presence of previous ocular surgery, congenital eye disease, high myopia (>6 dioptres), actual or previous diagnosis of glaucoma, optic disc anomaly, macular or vitreoretinal diseases.
• presence of significant lens opacities, low-quality OCT and OCT-A images.

The participans were older than 50 years with previous diagnosis of type 2 diabetes mellitus without signs of diabetic retinopathy.

The participans did not present other ophthalmological diseases