| preliminary | Lying before: leading to: being at the threshold of. (18 Nov 1997) |
|---|---|
| preliminary impression | Primary impression, in dentistry, one made for the purpose of diagnosis or the construction of a tray. (05 Mar 2000) |
| buttonhole iridectomy | peripheral iridectomy |
| stenopeic iridectomy | peripheral iridectomy |
| iridectomy | <surgery> The act or process of cutting out a portion of the iris in order to form an artificial pupil. Origin: Gr, iris + cutting out; out + to cut. Source: Websters Dictionary (01 Mar 1998) |
| optical iridectomy | Iridectomy performed for the purpose of improving vision by making an artificial pupil. Peripheral iridectomy, in narrow-angle glaucoma, the surgical removal of a minute portion of the iris at its root; in intracapsular extraction of cataract, removal of one or more minute sections near the peripheral border, leaving the pupillary margin intact. Synonym: buttonhole iridectomy, stenopeic iridectomy. Sector iridectomy, an iridectomy in which a portion of the pupillary margin is excised. (05 Mar 2000) |
| therapeutic iridectomy | An iridectomy performed for the prevention or cure of disease, e.g., angle-closure glaucoma. (05 Mar 2000) |