Criteria

Standardization of Uveitis Nomenclature (SUN) Working Group grading for intraocular inflammation[2]

Anterior chamber cells (number of cells in 1 mm by 1 mm slit beam)

  • Grade 0 is <1

  • Grade 0.5+ is 1-5

  • Grade 1+ is 6-15

  • Grade 2+ is 16-25

  • Grade 3+ is 26-50

  • Grade 4+ is >50.

Anterior chamber flare

  • Grade 0 is none

  • Grade 1+ is faint

  • Grade 2+ is moderate (iris and lens detail clear)

  • Grade 3+ is marked (iris and lens detail hazy)

  • Grade 4+ is intense (fibrin or plastic aqueous).

SUN terminology for activity of uveitis[2]

  • Inactive: grade 0 cells

  • Worsening activity: 2-step increase in level of inflammation or increase to grade 4+

  • Improved activity: 2-step decrease in level of inflammation or decrease to grade 0

  • Remission: inactive disease for >3 months after stopping medical therapy.

Posterior uveitis grading[2]

  • Grade 0: no vitreous cells

  • Grade 1: vitreous cells with clear view of the posterior fundus

  • Grade 2: vitreous cells with poor view of details, and view of the optic nerve and retinal vessel

  • Grade 3: vitreous cells with view of optic nerve

  • Grade 4: vitreous cells with no view of the posterior segment.

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