iris

(iris) (Gr. ἴρις a rainbow or halo}. 1. The circular pigmented membrane behind the cornea, perforated by the pupil. It is made up of circumuscular fibers surrounding the pupil (sphinc’- ter pupil'la), the band of radiating fibers by which the pupil is dilated (dia’tor pupil’la), and of a pigmentary layer behind it which is really a part of the retina. 2. A genus of iridaceous plants. 3. The rhizome of J. versicolor: purgative, emetic, and diuretic. Dose, 10-20 gr. (0.666- 1.333 gm.); of extract, 1-2 gr. (0.066-0.133 gm.); of fluidextract, 5-10 min. (0.333-0.666 c.c.). i. bombé, a condition in which the iris is bowed forward by the collection of aqueous humor between the iris and lens in total posterior synechia. Plorentine i., orris-root, the fragrant rhizome [L. rhizo’ma irid is] of I. florenti’na and other European species of iris: astringent, aromatic, and toral. Dose, 5-15 gr. (0.333-1 gm.). tremuous i., iridodonesis. Irish mo (i-rish maws’). See Chondrus. iris in (i’ris-in). A concentration or resinoid pre from I’ris versicolor: aperient and cholagogue. Dose, 2-4 gr. (0.133-0.266 gm.). irisol (iris-ol) A proprietary disinfectant mixture containing iodoform (50 per cent.) and boric acid (45 per cent.). irisopsia (i-ris-op’se-ah) (Gr. Ipts rainbow + dps vision]. Visual defect in which objects appear surrounded by rings of colored light. iritic (i-rit’ik). Pertaining to or of the nature of iritis. iritis (i-ri’tis) [Gr. Ipts iris + -eres inflammation]. Inflammation of the iris. The condition is marked by in, congestion in the ciliary region, photophobia, contraction of the pupil, and discoloration of the iris. It is caused by injury, syphilis, rheumatism, gonorrhea, tuberculosis, etc. i. catamenia‘lis, iritis recurring before each menstrual period. plastic i., a variety in which the exudate consists of fibrinous matter which forms new ti ue. urulent i., iritis in which the exudate is purulent. quiet i., iritis without pain or ciliary congestion. serous i., iritis in which the exudate consists of serum. spongy i., iritis with a fibrinous exudate, forming a spongy ma in the anterior chamber. sympathetic i., a variety affecting a previously sound eye from sympathy with the other eye which has been injured. iritoectomy (i’rit-o-ek’to-me) [iris + Gr. ἐκτομή excision]. Removal of a portion of the iris for cataract in which the pupil has been by inflammatory deposits. iritomy (i-rit’o-me). Same as iridotomy. irocose (i’ro-kés). A proprietary preparation of proteoses and iron in an organic form. iron (i’ern) [L. fer’rum]. A metallic element found in certain minerals, in nearly all soils, and in mineral waters: atomic weight, 55.9; specific gravity, 7.7; symbol, Fe. Iron occurs in the blood, especially in the hemoglobin, and is used as a tonic to build up the blood in anemia. The compounds of iron are astringent and styptic. i. acetate, a compound, Fe,(C,H,0,),, used as an astringent. Dose, in solution, 5-15 min. (0.3-1 c.c.); of tincture, 10-30 min. (0.6-2 c.c.). i. ibuminate [L. fer’ri albu’minas]. Dose, 10-20 gr. (0.6-1.3 gm.). alcoholized i. Same as pulterized i. i. te, a tastele , brown, insoluble powder; a salt especially valuable for its blandne and a imilability; a sedative and laxative tonic. Dose, 10-15 gr. (0.66-1 gm.). i. and aluminum sulphate [L. fer’ri εἰ alu’mina sul’- phas], an astringent salt now little used. Dose; 5-10 gr. (0.33-0.66 gm.). i. and ammonium acetate, dose of solution (Basham’s mixture, Ji’quor fer'ri εἰ ammon’ii aceta’tis), 4-8 dr. (16-32 c.c.). i. and ammonium citrate [L. Serri et ammo'nii ci‘tras}, a substance in transparent garnet scales. Dose, 2-5 gr. (0.13-0.33 gm.). i. and ammonium sulphate [L. fer’ri εἰ ΙΗΠΟΝ ammo'nié sul’ pkas), ammonioferric alum, FeNH,- (SO,), + 12H,O; a powerful styptic. Dose, 5-10 gt. (0.3-0.6 gm.). i. and ammonium tartrate [L. fer'ri εἰ ammo’nii tar'tras), pota ioferric tartrate; a mild chalybeate. Dose, 5-15 gr. (0.3-1 gm.). i. and magnesium citrate [L. Seri et magnes’ii ci’tras}], a salt in green-yellow scales. Dose, 5-10 gr. (0.33-0.66 gm.). i. and pota ium tartrate [L. fer'ri εἰ pot as’sis tar’- ras}, a salt, C,H,O,(FeO)K, in brown, red, or garnet scales; pota ioferric tartrate: a pleasant chalybeate. Dose, 5-15 gr. (0.3-1 gm.). i. and quinin citrate [L. fer'ri εἰ quin i’ne ci’iras], a preparation in dark-greenish golden scales. Dose, 3-5 gr. (0.2-0.3.); of solution, 3-15 min. (o.2-1 c.c.). i. and strychnin citrate ie. Servi εἰ strychni’ne ci’tras), a bitter tonic substance in red scales. Dose, 1-3 gr. (0.06-0.2 gm.). i. arsenate, ferrous arsenate, 3Fe(FeO)AsO, + 16H,O. Dose, ¢yts gr. (0.006-0.008 gm.). i. arseno tartrate. See asferryl. i. benzoate, an orange-brown powder, Fe,oCsH.0, tre oH20; , I-§ Br. (0.06-0.33 gm.).. ferri bro’midum), a_brick-red, M linceenens ly, FeBr,: tonic, alterative, and styptic. Dose, 5-10 gr. (0.3-0.6 gm.). i. cacody. > a compound ‘used in anemia. Dose, 1-5 gr. 0.06-0.3 gm.); hypodermically, 4 gr. (0.03 gm.).. carbonate [L. fer’ri car’bon as}, ferrous carbonate, FeCO,: a white, flocculent or crystalline salt, readily convertible into ferric oxid. Dose, in pill (Blaud’'s pill, mas’sa fer'ri carbon a’tis), 3-5 gr. (0.2-0.3 gm.); of saccharated carbonate, 2- 10 gr. (0.13-0.66 gm.). i. caseinate. Same as i. nucleo-albuminate. 1. chlorid [L. fer'ri chlo’- ridum}, hydrous ferric chlorid, Fe,Cl,; + 12H,O: an orange-colored, crystalline body. Dose of solution (Ji’quor fer'ri chlo'rid i), 2-10 min. (0.13-0.66 c.c.); of tincture (tinctu'ra fer'ri chlo’rid i), 5-10 min. (0.33-0.66 c.c.). Sev other iron chlorids are described. i. citrate (L. fer’ri ci’tras], ferric citrate, Fe,(C,H,0,). + 6H,O: an agent in clear, garnet-colored scales. Dose, 2-5 gr. (0.13-0.33 gm.); of solution (i’- quor fer'ri citra’tis), 5-10 min. (0.33-0.66 c.c.); of wine (vi’num fer'ri citra’tis), 1-2 dr. (4-8 c.c.). i. citropyrophosphate, the official soluble ferric pyrophosphate. dia d i. (L. fer'rum dialysa’tum), an aqueous solution of ferric oxy chlorid prepared by dialysis. Dose, 5-15 min. (0.33-1 c.c.). 1. glycerophosphate, a salt, FeP- O,C;H;(OH), + 2H,0, in yellow plates or in a green-gray powder; a nerve tonic. Dose, 2-5 gr. (0.1-0.3 gm.). i. hydroxid [L. fer’ri hy’- droxidum), the hydrated oxid of iron, Fe(OH),; a red-brown substance, used as an antidote in poisoning by arsenous acid, in tablespoon doses, often repeated. i. hypophosphite (L. fer'ri nypophos phis}, dihydric ferric hypophosplfite, Fe(H,PO,),: a white or grayish salt. Dose, 5-10 gr. (0.33-0.66 gm.); of syrup, 1-2 fiidr. (4-8 c.c.). i. fodid, ferrous iodid, Fel,, in clear, greenish, deliquescent, tabular crystals: it is especially useful in scrofulous conditions. Dose, 1-5 gr. (0.06-0.33 gm.); of saccharated iodid, 5-10 gr. (0.33°0.66 gm.); of syrup, 5- 30 min. (0.33-2 c.c.). i. iodobehenate, an amorphous, reddish-brown powder, useful in scrofula, chlorosis, rachitis, etc. i. lactate (L. fer’ri lac’tas], ferrous lactate, Fe2C,H,0;.3H,O, a salt in minute, whitish-green crystals. Dose, 1-5 grt. (0.06-0.33 gm.). i. magnesium sulphate, a greenish-white powder, FeSO,.MgSO, + 7H,0: used in anemia. Dose, 8 gr. (0.5 gm.). “*masked’’ i., iron occurring in the form of a complex ion. i. nucleo-albuminate, case in a ted iron; a tastele preparation of casein and iron. i oleate, a waxy solid; astringent and tonic. i. te, ferrous oxalate: FeC 20,+H,0; a yellowtoh crystalline powder. Dose, 1-2 gr. (0.066- 0.13. gm.). i. phosphate [L. ferri phos’- Phas], ferrosoferric phosphate; the salt is a compound of ferric and ferrous phosphates, 491 IRRITABILITY Fe,2P0,, FePQ. + 12H.0- Dose, 5-10 gr. (0.33 0.66 gm.). iP hosphate, soluble aL. forri phor plas solu’ bilis), ftloferric citrophosphate, PO,Na,H = C,H. Dose, 5-10 gr. (0.3-0.6 gm.). pulverized i. (L. fer'rum pulver a’tum), etallie iron mechanically powdered. Dose, 1-5 gr. (0.06-0.3 gm.). i. pyrophosphate Serri pyrophos’ phas}, ferric pyrophosphate, e,(P,0. 2) 3° The soluble and official salt (fer’ri eee phas solu'bilis) is a double citropyroosphate of jifon and sodium. Dose, 1-5 gr. to. {o.06°0.35 gm). Quevenne’s i., reduced iron. [L. fer’rum reduc’tum, finely powdered metallic iron obtained by precipitation with hydrogen from a solution of the oxid or carbonate., 1-5 BT. (0.06-0.33 gm.). i. sub carbonate (L. fer'ri subcar’bon as}, an amorphous, brownish powder, consisting mainly of iron hydroxid. Dose, 5-30 gr. (0.33-2 gm.). i. sub sulphate [1,. fer’ri subsul’ phas|, basic ferric sulphate, or Monsel’s salt, Fe,Q(SO,)5: in reddish-brown, transparent scales or in an amorphous ma ; a powerful styptic. i. succinate, ferrous succinate, a green-gray substance: said to be useful in cholelithiasis. Dose, ς gr. (0.33 gm.). Various ferric succinates are also prepared. i. sulphate [L. fer’ri sul’ phas), ferrous sulphate, FeSO,+7H,0: an astringent tonic; used also as a deodorizer and disinfectant. Dose, 1-5 gr. (0.066-0.33 gm.); of dried sulphate (fer'ri sul’ phas exsicca’tus), 4-3 gr. (0.03-0.19 gm.); of granulated sulphate, 3 gr. (0.19 gm.). i. tannate, a salt in crimson scales or plates. Dose; 8-30 gr. (0.52-2 gm.). i. valerian ate (L. fer’ valeria’nas], a dark-red, amorphous powder, Fe,- (C,H,O,),: tonic and sedative. Dose, 1-3 gr. (0.066-0.2 gm.). vitellin ate, a therapeutic preparation of egg-yolk and iron. See oviferrin. frotomy (i-rot’o-me). Same as iridotomy.