What describes the typical positioning of the upper and lower eyelids in relation to the limbus?

The typical positioning of the upper and lower eyelids in relation to the limbus is characterized by the upper lid resting a little lower than the limbus and the lower lid resting slightly above it. The upper lid generally sits around 2mm lower than the limbus, while the lower lid is positioned approximately 1mm above the limbus. This alignment is important for proper ocular protection and comfort.

The positioning reflects the natural anatomy and function of the eyelids, which are designed to cover the cornea when the eyes are closed and facilitate tear distribution when open. This balance helps maintain ocular surface health and ensures that the visual axis is unobstructed. Therefore, option B accurately describes this typical relationship between the eyelids and the limbus.