It borders with the sclera by the corneal limbus.

First, the conjunctiva and Tenon's capsule are incised about 6 mm from the corneal limbus.

It is a dark-colored manifestation of the corneal limbus resulting from optical properties of the region.

The conjunctiva is a thin transparent tissue that covers the eye from the Corneal limbus to the lid margin.

The corneal limbus is the border of the cornea and the sclera (the white of the eye).

The conjunctival peritomy is performed at the corneal limbus, preserving as much healthy tissue as possible.

The limbus sign is a ring of dystrophic calcification evident as a "milky precipitate" (i.e. abnormal white color) at the corneal limbus.

With Swiss ophthalmologist Johann Friedrich Horner (1831-1886), "Horner-Trantas spots" are named, which are defined as small white-yellow chalky concretions of the conjunctiva around the corneal limbus.