| ITR | intraocular tension recorder; intratracheal |
|---|---|
| T + 1, T + 2, T + 3 | first, second, and third stages of increased intraocular tension |
| T-1, T-2, T-3 | first, second, and third stages of decreased intraocular tension |
| Tn | normal intraocular tension; transposon |