Which tool is used to diagnose contact lens-related complications?

The use of a corneal topographer or slit lamp for diagnosing contact lens-related complications is grounded in their ability to provide detailed information about the health and shape of the cornea and the overall ocular surface. A slit lamp allows practitioners to observe the eye under magnification, making it possible to detect conditions such as corneal edema, neovascularization, and lens deposition that may arise from contact lens wear. Additionally, corneal topography offers precise mapping of the cornea's curvature and contour, which can be crucial in assessing how a contact lens fits and functions on the eye's surface.

This combination of tools allows for a comprehensive evaluation of ocular health, specifically in relation to contact lens wear. By identifying abnormalities or complications, the appropriate action can be taken to address any issues, enhancing patient care and visual outcomes. Other tools listed do not provide the same level of diagnostic utility for contact lens issues; for instance, ocular ultrasound is more typically used for examining the interior of the eye or assessing structures that are not visible with a direct examination.