Table 1.
Summary of tonometry types and recommendations
| Tonometry type | Recommendation | Notes | Cost/tip | Cost/year* |
|---|---|---|---|---|
| GAT | Use with caution when essential(disposable prims and slit lamp guards in place) | Although hypochlorite likely to be an effective solution for disinfection of standard prisms, safer practice is to use disposable prims | $100 | $36,400** |
| Tonosafe® | Recommended | close working distance | $1.19 | $20,230 |
| Air-puff tonometry | Not recommended | Aerosolization of air particles possible | NA+ | NA+ |
| Pneumotonometry | Not recommended | Aerosolization of air particles possible | NA+ | NA+ |
| Rebound i-care tonometry | Recommended | Disposable tipFurther working distance than GATPerform 2 readings to ensure consistencyAvoids need for anesthetic drops | £0.70 (~$0.90) for i-care TA01i and ic100 | $46,000 |
| Tonopen applanation tonometry | Recommended | Disposable tipFurther working distance than GATPerform 2 readings to ensure consistency | $0.42 | $39,370 |