See Also: Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
opal(dictionary)
opal(encyclopedia)
opal(medicine)
opal(dictionary)
opal codon(medicine)
opal suppressor(medicine)
opal mutation(medicine)
Medicine Lodge Memorial Hospital- Medicine Lodge(health)
Optical(health)

optical iridectomy (medicine) and opal (oh)


optical iridectomy (medicine)


optical iridectomy
<procedure> 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.


opal (oh)



[Date: 1500-1600; Language: Latin; Origin: opalus, from Sanskrit upala 'stone, jewel']
a type of white stone with changing colours in it, often used in jewellery