cataract

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cat·a·ract

 (kăt′ə-răkt′)
n.
1. A large or high waterfall.
2. A great downpour; a deluge.
3. Medicine Opacity of the lens or capsule of the eye, causing impairment of vision or blindness.

[Middle English cataracte, from Old French, from Latin cataracta, from Greek katarraktēs, kataraktēs, downrush, waterfall, portcullis, probably from katarassein, to dash down (kat-, kata-, cata- + arassein, to strike). Sense 3, from a comparison to a portcullis or other falling impediment or covering.]

cat′a·rac′tous (-răk′təs) adj.

cataract

(ˈkætəˌrækt)
n
1. (Physical Geography) a large waterfall or rapids
2. a deluge; downpour
3. (Pathology) pathol
a. partial or total opacity of the crystalline lens of the eye
b. the opaque area
[C15: from Latin catarracta, from Greek katarrhaktēs, from katarassein to dash down, from arassein to strike]

cat•a•ract

(ˈkæt əˌrækt)

n.
1. a descent of water over a steep surface; a waterfall, esp. one of considerable size.
2. any furious rush or downpour of water; deluge.
3.
a. an abnormality of the eye characterized by opacity of the lens.
b. the opaque area.
[1350–1400; Middle English < Latin catar(r)acta waterfall, portcullis < Greek katarráktēs, akin to katarássein to dash down]
cat`a•rac′tal, cat`a•rac′tous, adj.

cat·a·ract

(kăt′ə-răkt′)
1. A cloudiness in the lens of an eye or the membrane that covers it, causing partial or total blindness.
2. A large, steep waterfall.

Cataract

 a violent downpour or rush; anything likened to a waterfall. See also cascade.
Examples: cataract of nastiness; of evil news, 1864; of panegyrics; of water.

cataract

An opaque area that forms within the lens of the eye.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.cataract - an eye disease that involves the clouding or opacification of the natural lens of the eye
eye disease - any disease of the eye
cortical cataract - a cataract that affects the lens cortex
nuclear cataract - a cataract that affects the nucleus of the lens
posterior subcapsular cataract - a cataract in the rear of the lens capsule
2.cataract - a large waterfall; violent rush of water over a precipice
waterfall, falls - a steep descent of the water of a river

cataract

noun
1. (Medical) opacity (of the eye) a battle with blindness caused by cataracts
2. waterfall, falls, rapids, cascade, torrent, deluge, downpour, Niagara There was an impressive cataract at the end of the glen.

cataract

noun
An abundant, usually overwhelming flow or fall, as of a river or rain:
Chiefly British: spate.
Translations
šedý zákalvodopád
grå stærkataraktstær
vesiputousharmaakaihikaihi
mrenaslap
hályog
vagl
大きな滝白内障
백내장큰 폭포
katarakta
katarakta
šedý zákal
forsgråstarr
ต้อน้ำตกที่สูงชัน
màng thủy tinh thểthác nước lớn

cataract

[ˈkætərækt] N
1. (= waterfall) → catarata f
2. (Med) → catarata f

cataract

[ˈkætərækt] n
(MEDICINE)cataracte f
(= waterfall) → cataracte f

cataract

n
(= rapids)Katarakt m
(Med) → grauer Star

cataract

[ˈkætəˌrækt] n (Geog, Med) → cateratta

cataract

(ˈkӕtərӕkt) noun
a clouding of the lens of the eye causing difficulty in seeing.

cataract

إِعْتَامُ عَدَسَةِ العَيْـن, شَلّاَل šedý zákal, vodopád grå stær, katarakt grauer Star, Wasserfall καταρράκτης catarata harmaakaihi, vesiputous cataracte mrena, slap cataratta, cateratta 大きな滝, 白内障 백내장, 큰 폭포 cataract, waterval foss, grå stær wodospad, zaćma catarata большой водопад, катаракта fors, gråstarr ต้อ, น้ำตกที่สูงชัน çağlayan, katarakt màng thủy tinh thể, thác nước lớn 大瀑布, 白内障

cat·a·ract

n. catarata, opacidad del cristalino;
anular ______ anular;
black ______ negra;
blue ______ cerúlea;
complete ______ completa;
congenital ______ congénita;
green ______ verde;
mature ______ madura;
senile ______ senil;
soft ______ blanda.

cataract

n catarata
References in periodicals archive ?
6 (7.5%), mature cataract in 23 (28.75%), and hypermature in 4 (5%) eyes
Mature cataract was the most common seen in 72.22% as compared to immature who was 27.78%.
Finally, the third stage of the capsulorhexis module, "capsulorhexis in mature cataract", was performed and the participants' scores were noted.
Sex Location Right Left Group Age BMI Male Female eye eye Control 71.64 25.46 4 2 2 4 (cataract) [+ or -] [+ or -] 3 2 -- 5 6.43 2.59 11 13 11 (a) 13 (a) 5 4 6 3 23 21 19 25 PEX + 70.93 25.66 5 2 2 5 cataract [+ or -] [+ or -] 2 4 2 4 5.63 2.46 12 19 17 (a) 14 (a) -- -- -- -- 19 25 21 23 Group Type of cataract Control Posterior subcapsular cataract (cataract) Mature cataract Nuclear cataract Cortical cataract Total (n: 44) PEX + Posterior subcapsular cataract cataract Mature cataract Nuclear cataract Cortical cataract Total (n: 44) PEX: pseudoexfoliation syndrome; BMI: body mass index.
Among the areas they consider are managing capsulorhexis and complications, soft and mature cataract management and complications, intraocular lens implantation in the absence of adequate capsular support, machine management in complicated cases, toxic anterior segment syndrome and endophthalmitis, and prevention pearls and damage control.
Mean peak to peak amplitudes seemed to be smaller for each dogs with b/a ratio higher than the normal range; 3.74+0.97 for dog with mature cataract and 5.40+2.72 for dog with hypermature cataract and vitreous degeneration indicating affection of outer retinal layers.
At the end of 8 weeks, the severity of cataract was significantly lower in group III compared to group II (P=0.01) and mature cataract was developed in most of the lenses (50% with score 3 and 30% with score 4) in group II rats (figure 2b).
09 Which of the following statements relating to mature cataract and IOP is incorrect?
However, it should be noted that the progression of cataract was very slow when compared to our previous observations with T1D rats upon injection of STZ to adult rats, where the onset of cataract was between 3 and 4 weeks after diabetes induction and developed mature cataract by 8-9 weeks [21,22, 29].
Initiation and progression of lenticular opacity was graded according to the classification of lens opacification [24-26]: grade 0, clear lens or no vacuoles present; grade 1, peripheral vesicles; grade 2, vacuoles located at the periphery of the lens occupying an area of between one-third and twothirds of the radius from the periphery; grade 3, vacuoles extending up to two-thirds of the radius from the periphery and nuclear opacity may be seen; grade 4, mature cataract with nuclear and peripheral cortex opacities; grade 5, hypermature cataract with whole lens opacity.
Age-related cataract diagnostic: A slit lamp was used to grading the cataracts as clinically into five subgroups, including Nuclear Sclerosis (NS), Posterior Sub Capsular (PSC), Cortical Cataract (CC), Mixed Cataract (Mix C) and Mature Cataract (Mat C).
A 98-year-old man with mature cataract, whose vision had been reduced to light perception only, was the oldest patient.