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The Cataract Grading Scale
| Grade | Findings on Slit-Lamp Microscopy of the Lens |
|---|---|
| Grade 0 | Normal transparent lens |
| Grade 1 | Initial signs of posterior subcapsular or nuclear opacity involving tiny scatters |
| Grade 2 | Slight nuclear opacity with swollen fibers or posterior subcapsular scattering foci |
| Grade 3 | Diffuse nuclear opacity with cortical scattering |
| Grade 4 | Partial nuclear opacity |
| Grade 5 | Nuclear opacity without lens cortex |
| Grade 6 | Mature cataract of the entire lens |
