What is lens-induced uveitis (LIU)?

What is lens-induced uveitis (LIU)?

• A. Inflammation caused by lens protein exposure
• B. Inflammation due to retinal detachment
• C. Inflammation from glaucoma
• D. Inflammation caused by corneal edema

Answer: (A)

Lens-induced uveitis arises when proteins from the lens escape into the anterior chamber and trigger an inflammatory reaction in the uveal tract. Normally the lens is isolated by its capsule, but in a degenerated or damaged lens (such as a hypermature cataract), the capsule can leak or rupture, allowing lens proteins to act as antigens. The immune response targets the iris and ciliary body, producing anterior uveitis with signs like cells and flare in the anterior chamber and sometimes keratic precipitates. This is distinct from inflammation caused by retinal detachment, glaucoma, or corneal edema, which involve different tissues and mechanisms.

Lens-induced uveitis arises when proteins from the lens escape into the anterior chamber and trigger an inflammatory reaction in the uveal tract. Normally the lens is isolated by its capsule, but in a degenerated or damaged lens (such as a hypermature cataract), the capsule can leak or rupture, allowing lens proteins to act as antigens. The immune response targets the iris and ciliary body, producing anterior uveitis with signs like cells and flare in the anterior chamber and sometimes keratic precipitates. This is distinct from inflammation caused by retinal detachment, glaucoma, or corneal edema, which involve different tissues and mechanisms.