Which description best matches superior limbic keratoconjunctivitis (SLK)?

Which description best matches superior limbic keratoconjunctivitis (SLK)?

• A. A simple conjunctival irritation without limbal involvement
• B. A condition with circumlimbal injection and conjunctival changes
• C. A disorder characterized by a combination of findings under the superior lid due to chronic inflammation, including limbal injection, corneal neovascularization, and papillary hypertrophy
• D. A condition related to eyelid malposition

Answer: (C)

Superior lid–conjunctival inflammation that chronically irritates the superior area is the key idea. In SLK, the inflammation is focused under the upper lid near the limbus, leading to characteristic signs: injection around the limbus (circumlimbal injection), changes in the conjunctiva, neovascularization of the cornea forming a superficial pannus, and papillary hypertrophy of the upper tarsal/conjunctiva. This combination—superior lid involvement with limbal inflammation, corneal neovascularization, and papillary hypertrophy—best fits the condition. The other descriptions don’t capture all these elements: a simple irritation lacks limbal involvement; circumlimbal injection with conjunctival changes misses the prominent superior lid–conjunctival papillary changes and the corneal pannus; and while eyelid malposition can contribute, it doesn’t define the full inflammatory conjunctival-limbal picture seen in SLK.

Superior lid–conjunctival inflammation that chronically irritates the superior area is the key idea. In SLK, the inflammation is focused under the upper lid near the limbus, leading to characteristic signs: injection around the limbus (circumlimbal injection), changes in the conjunctiva, neovascularization of the cornea forming a superficial pannus, and papillary hypertrophy of the upper tarsal/conjunctiva. This combination—superior lid involvement with limbal inflammation, corneal neovascularization, and papillary hypertrophy—best fits the condition.

The other descriptions don’t capture all these elements: a simple irritation lacks limbal involvement; circumlimbal injection with conjunctival changes misses the prominent superior lid–conjunctival papillary changes and the corneal pannus; and while eyelid malposition can contribute, it doesn’t define the full inflammatory conjunctival-limbal picture seen in SLK.