| Grade | Description |
|---|---|
| 0 | Clear, no opacity seen |
| 1 | Trace diffuse opacity or small (<0.5 mm2) focal opacity of moderate density. Able to visualize all iris and lens details |
| 2 | Mild diffuse opacity or medium-sized (<1 mm2) focal dense opacity. Able to visualize iris and lens but unable to visualize iris details in area of opacity. |
| 3 | Moderate diffuse opacity or large-sized (>1 mm2) focal dense opacity. Able to visualize part of iris and lens. |
| 4 | Dense diffuse opacity. No anterior chamber view, unable to visualize iris or lens. |
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