Summary of some of the advantages and disadvantages of PCO evaluation systems
| System of analysis | Ease of availability | Objectiveness | Flexibility in use to measure varying criteria | Sensitivity | Specificity |
|---|---|---|---|---|---|
| + = very poor; +++++ = excellent. | |||||
| Vision loss/visual psychophysics | +++++ | ++ | + | ++ | + |
| Nd:YAG capsulotomy rates | +++++ | ++ | + | ++ | ++ |
| Slit lamp grading | +++++ | + | ++++ | ++ | ++ |
| Fundus visibility | +++++ | + | + | ++ | ++ |
| Schiempflug system | ++ | +++ | + | +++ | +++ |
| Density map | +++ | ++++ | ++ | ++++ | ++++ |
| Computerised analysis of density boundaries | ++++ | ++++ | ++++ | ++++ | ++++ |
| Texture analysis | + | +++++ | ++ | +++++ | ++++ |
| Colour coded grid | +++ | ++++ | +++ | ++++ | ++++ |