What is the term for the space between the eyelids?

What is the term for the space between the eyelids?

• A. Conjunctiva
• B. Palpebral fissure
• C. Retina
• D. Iris

Answer: (B)

Palpebral fissure is the space between the eyelids—the opening formed by the upper and lower lid margins and bounded by the inner and outer canthi. This term specifically describes the gap through which the eye is visible when the lids are apart. It’s different from other ocular structures: the conjunctiva is the mucous membrane lining the lids and covering the eye, the retina is the light-sensitive layer at the back of the eye, and the iris is the colored muscle around the pupil that controls light entry. The palpebral fissure is the name for that eyelid gap and is a term you’ll encounter when discussing eyelid function, appearance, or measurements.

Palpebral fissure is the space between the eyelids—the opening formed by the upper and lower lid margins and bounded by the inner and outer canthi. This term specifically describes the gap through which the eye is visible when the lids are apart. It’s different from other ocular structures: the conjunctiva is the mucous membrane lining the lids and covering the eye, the retina is the light-sensitive layer at the back of the eye, and the iris is the colored muscle around the pupil that controls light entry. The palpebral fissure is the name for that eyelid gap and is a term you’ll encounter when discussing eyelid function, appearance, or measurements.