Final answer:
Preseptal cellulitis is an infection of the subcutaneous tissue anterior to the orbital septum.
Step-by-step explanation:
The ocular condition described in the question is preseptal cellulitis.
Preseptal cellulitis is an infection of the subcutaneous tissue anterior to the orbital septum. It can be caused by bacteria or viruses and is characterized by inflammation, redness, and swelling of the eyelid. It is important to distinguish preseptal cellulitis from orbital cellulitis, which is a more serious condition that involves infection of the tissues behind the orbital septum.
Examples of other ocular conditions mentioned in the question include pyogenic granuloma, internal hordeolum, external hordeolum, and orbital cellulitis.