A 7-year-old boy presents 2 days after sustaining a laceration to his L upper eyelid. He is febrile and feels unwell. The affected eyelid is drooping, swollen and erythematous, alongside being hot and tender on palpation. However, there is no visual impairment, proptosis or pain on eye movement.
What is the most likely diagnosis?
A. Orbital cellulitis
B. Viral Conjunctivitis
C. Periorbital cellulitis
D. Thyroid eye disease
E. Keratoconjunctivitis sicca