Wide-field OCT imaging of the cornea with a hypercentric lens

This study introduces a wide-field OCT imaging approach for the anterior corneal layers using a custom-designed hypercentric lens. The lens maintains near-perpendicularity of the probing beam to the anterior corneal surface, optimizing image contrast and resolution across the corneal diameter. The OCT system operates in dual-path and common-path modes, each with distinct advantages and limitations. Our findings show the system's ability to image and measure the thickness of anterior corneal microlayers with high resolution from the corneal center to its periphery. This approach shows promise for early detection of corneal conditions, such as keratoconus.