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Macula

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1374: 563: 459: 468: 595: 1373: 583: 49: 607: 261: 1210: 253: 547:. Neurological examination that confirms macular sparing can go far in representing the type of damage mediated by an infarct, in this case, indicating that the caudal visual cortex (which is the principal recipient of macular projections of the optic nerve) has been spared. Further, it indicates that cortical damage rostral to, and including, 1409:
1:posterior segment 2:ora serrata 3:ciliary muscle 4:ciliary zonules 5:Schlemm's canal 6:pupil 7:anterior chamber 8:cornea 9:iris 10:lens cortex 11:lens nucleus 12:ciliary process 13:conjunctiva 14:inferior oblique muscule 15:inferior rectus muscule 16:medial rectus muscle 17:retinal arteries and
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In detail, the normal human eye contains three different types of cones, with different ranges of spectral sensitivity. The brain combines the signals from neighboring cones to distinguish different colors. There is only one type of rod, but the rods are more sensitive than the cones, so in dim
562: 441:, cones predominate and are present at high density. The macula is thus responsible for the central, high-resolution, color vision that is possible in good light; and this kind of vision is impaired if the macula is damaged, for example in 350:
Because the macula is yellow in color, it absorbs excess blue and ultraviolet light that enter the eye and acts as a natural sunblock (analogous to sunglasses) for this area of the retina. The yellow color comes from its content of
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of the right eye (left image) and left eye (right image), seen from front so that left in each image is to the person's right. The gaze is into the camera, so in each picture the macula is in the center of the image, and the
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veins 18:optic disc 19:dura mater 20:central retinal artery 21:central retinal vein 22:optic nerve 23:vorticose vein 24:bulbar sheath 25:macula 26:fovea 27:sclera 28:choroid 29:superior rectus muscle 30:retina
366:, derived from the diet. Zeaxanthin predominates at the macula, while lutein predominates elsewhere in the retina. There is some evidence that these carotenoids protect the pigmented region from some types of 374:
lutein and 2 mg zeaxanthin has been shown to reduce the risk of age-related macular degeneration progressing to advanced stages, although these carotenoids have not been shown to prevent the disease.
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and can sometimes lead to the creation of a macular hole. Macular holes are rarely caused by trauma, but if a severe blow is delivered it can burst the blood vessels going to the macula, destroying it.
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light, they are the dominant photoreceptors active, and without information provided by the separate spectral sensitivity of the cones it is impossible to discriminate colors. In the fovea
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The anatomical macula at a size of 5.5 mm (0.22 in) is much larger than the clinical macula which, at a size of 1.5 mm (0.059 in), corresponds to the anatomical fovea.
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may go unnoticed for some time, damage to the macula will result in loss of central vision, which is usually immediately obvious. The progressive destruction of the macula is a
61:, its center slightly shifted to the temporal side. (The location in the image is misleading: it looks as if the macula were far removed from the center which is not the case.) 312:. The anatomical macula at 5.5 mm (0.22 in) is much larger than the clinical macula which, at 1.5 mm (0.059 in), corresponds to the anatomical fovea. 226:
The macula is responsible for the central, high-resolution, color vision that is possible in good light. This kind of vision is impaired if the macula is damaged, as in
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showing the macula as a spot to the left. The optic disc is the area on the right where blood vessels converge. The grey, more diffuse spot in the centre is a shadow
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is an unlikely outcome of the infarction, as too much of the lateral geniculate nucleus is, proportionally, devoted to macular-stream processing.
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Photograph of the retina of the human eye, with overlay diagrams showing the positions and sizes of the macula, fovea, and optic disc
284:(laterally, by 5°=1.5 mm). The macula in humans has a diameter of around 5.5 mm (0.22 in) and is subdivided into the 543:), yet display sparing of the macula. This selective sparing is due to the collateral circulation offered to macular tracts by the 1388: 1381: 1400: 1399: 1253: 1189: 1097: 1008: 833: 793: 756: 1380: 1379: 196:
and in other animals. The macula in humans has a diameter of around 5.5 mm (0.22 in) and is subdivided into the
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Visual input from the macula occupies a substantial portion of the brain's visual capacity. As a result, some forms of
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Tyler, C.W.; Hamer, R.D. (1990). "Analysis of visual modulation sensitivity. IV. Validity of the Ferry-Porter law".
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The fovea is located near the center of the macula. It is a small pit that contains the largest concentration of
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areas. An even smaller central region of highest receptor density (40–80 μm) is sometimes referred to as the
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Schematic diagram of the macula lutea of the retina, showing perifovea, parafovea, fovea, and clinical macula
151: 1402: 1844: 1812: 1649: 17: 1797: 1766: 1758: 1438: 1950: 1593: 1583: 1404: 720: 548: 230:. The clinical macula is seen when viewed from the pupil, as in ophthalmoscopy or retinal photography. 1385: 606: 1246: 532: 490:
The clinical macula is seen when viewed from the pupil, as in ophthalmoscopy or retinal photography.
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Time-Domain OCT of the macular area of a retina at 800 nm, axial resolution 3 μm
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Oesterberg, G. (1935). "Topography of the layer of rods and cones in the human retina".
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vision. Within the macula are the fovea and foveola that both contain a high density of
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In the case of occipitoparietal ischemia owing to occlusion of elements of either
1827: 1786: 1782: 1704: 651: 573: 539:(which, rarely, can involve blindness that the patient denies having, as seen in 391: 297: 209: 120: 1832: 1822: 1807: 1802: 1499: 1491: 1471: 1347: 1322: 641: 338:. The retina's receptor layer contains two types of photosensitive cells, the 316: 1944: 1857: 1792: 1629: 1049: 965: 636: 422: 144: 91: 48: 1817: 1641: 1476: 1458: 1068: 983: 949: 926: 691: 281: 86: 934: 1909: 1778: 1735: 1673: 1637: 1221: 360: 1723: 1481: 481: 409: 371: 363: 356: 285: 197: 169: 1699: 1694: 1613: 1267: 536: 426: 335: 324: 305: 301: 273: 217: 213: 193: 79: 58: 1617: 339: 1869: 1770: 1714: 1430: 498: 403: 289: 268:
The macula is an oval-shaped pigmented area in the center of the
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This article is about the macula of the eye. For other uses, see
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The clinical macula is seen when viewed from the pupil, as in
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Siegel, Allan; Sapru, Hreday N. (2006). Betty Sun (ed.).
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Oval-shaped pigmented area near the center of the retina
1118: 1116: 688:"MACULA | Meaning & Definition for UK English" 1175: 1092:. Springer Science & Business Media. p. 301. 1030: 188:
is an oval-shaped pigmented area in the center of the
1113: 814: 812: 513:that occur without involving the macula are termed 400:(FAZ) – 0.5 to 0.6 mm (0.020 to 0.024 in) 1177: 421:Structures in the macula are specialized for high- 1942: 809: 1376: 950:"Seven myths on crowding and peripheral vision" 280:. Its center is shifted slightly away from the 1003:. Elsevier Health Sciences. pp. 314–315. 600:Spectral-Domain OCT macula cross-section scan. 1247: 990: 719:. Project Orbis International. Archived from 1024: 740: 738: 947: 907:Journal of the Optical Society of America A 777: 775: 1254: 1240: 1089:Carotenoids Volume 5: Nutrition and Health 904: 898: 870: 47: 1058: 1048: 1037:Journal of Ophthalmic and Vision Research 996: 973: 864: 860:. London: Chapman & Hall. p. 52. 751:. Elsevier Health Sciences. p. 393. 735: 327:in terms of having two or more layers of 855: 772: 448: 259: 251: 894:. Chicago: University of Chicago Press. 14: 1943: 889: 849: 785:The Clinical Handbook of Ophthalmology 744: 53:The macula is the central part of the 1235: 1000:Clinical Anatomy of the Visual System 941: 883: 781: 1128:The Lecturio Medical Concept Library 554: 1148: 323:. The anatomical macula is defined 24: 1372: 1151:"Posterior Cerebral Artery Stroke" 25: 1962: 1202: 825:Vitreoretinal Surgical Techniques 429:, which are nerve cells that are 233:The term macula lutea comes from 1208: 605: 593: 581: 561: 535:, patients may display cortical 466: 457: 1169: 1142: 1031:Hobbs RP, Bernstein PS (2014). 873:Acta Ophthalmologica Supplement 412:– 0.15 mm (0.0059 in) 680: 406:– 0.35 mm (0.014 in) 394:– 1.55 mm (0.061 in) 13: 1: 1086:; Pfander, Hanspeter (2009). 673: 1900:Optical coherence tomography 1654:Photosensitive ganglion cell 690:. Lexico.com. Archived from 484:is located towards the nose. 247: 7: 1650:Giant retina ganglion cells 1439:Capillary lamina of choroid 997:Remington, Lee Ann (2011). 617: 416: 370:. A formulation of 10  10: 1967: 1594:Retinal pigment epithelium 1584:External limiting membrane 948:Strasburger, Hans (2020). 788:. CRC Press. p. 134. 621: 549:lateral geniculate nucleus 385: 29: 1882: 1843: 1757: 1748: 1682: 1602: 1537: 1527: 1490: 1457: 1429: 1417: 1370: 1313: 1285: 1274: 533:posterior cerebral artery 162: 150: 138: 126: 114: 102: 97: 85: 71: 66: 46: 41: 1222:MedlinePlus Encyclopedia 1050:10.4103/2008-322X.150829 966:10.1177/2041669520913052 858:Light, colour and vision 828:. CRC Press. p. 6. 345: 1589:Layer of rods and cones 1545:Inner limiting membrane 856:le Grand, Yves (1957). 32:Macula (disambiguation) 1411: 1180:Essential Neuroscience 1124:"Macular Degeneration" 1084:Liaaen-Jensen, Synnove 927:10.1364/JOSAA.7.000743 890:Polyak, S. L. (1941). 745:Yanoff, Myron (2009). 624:anatomical terminology 612:macula histology (OCT) 545:middle cerebral artery 524:homonymous hemianopsia 265: 257: 164:Anatomical terminology 1905:Eye care professional 1710:Foveal avascular zone 1572:Outer plexiform layer 1560:Inner plexiform layer 1515:Iris sphincter muscle 1408: 449:Clinical significance 398:Foveal avascular zone 294:foveal avascular zone 263: 255: 206:foveal avascular zone 1925:Physiological Optics 1895:Ocular immune system 1634:Retina ganglion cell 1217:at Wikimedia Commons 782:Small, R.G. (1994). 667:Intermediate uveitis 632:Macular degeneration 526:with macular sparing 519:visual field testing 503:macular degeneration 443:macular degeneration 368:macular degeneration 342:and the cone cells. 228:macular degeneration 1749:Anatomical regions 1610:Photoreceptor cells 1577:Outer nuclear layer 1565:Inner nuclear layer 1555:Ganglion cell layer 1510:Iris dilator muscle 1305:Trabecular meshwork 919:1990JOSAA...7..743T 723:on 19 December 2014 646:epiretinal membrane 359:, which are yellow 321:retinal photography 1412: 1155:Medscape Reference 662:Photic retinopathy 657:Macular hypoplasia 622:This article uses 521:might demonstrate 477:Fundus photographs 433:with high acuity. 266: 258: 1951:Human eye anatomy 1938: 1937: 1930:Visual perception 1878: 1877: 1845:Posterior segment 1813:Posterior chamber 1744: 1743: 1646:Bistratified cell 1550:Nerve fiber layer 1523: 1522: 1467:Ciliary processes 1368: 1367: 1213:Media related to 1191:978-0-7817-9121-2 1099:978-3-7643-7501-0 1082:Britton, George; 1010:978-1-4557-2777-3 835:978-1-85317-585-5 820:Peyman, Gholam A. 795:978-1-85070-584-0 758:978-0-323-04232-1 570:fundus photograph 555:Additional images 517:. (For example, 511:visual field loss 495:peripheral vision 276:and other animal 178: 177: 173: 16:(Redirected from 1958: 1915:Refractive error 1853:Vitreous chamber 1798:Anterior chamber 1759:Anterior segment 1755: 1754: 1535: 1534: 1444:Bruch's membrane 1427: 1426: 1419:Uvea / vascular 1375: 1295:Episcleral layer 1283: 1282: 1256: 1249: 1242: 1233: 1232: 1212: 1196: 1195: 1183: 1173: 1167: 1166: 1164: 1162: 1146: 1140: 1139: 1137: 1135: 1130:. 6 October 2020 1120: 1111: 1110: 1108: 1106: 1079: 1073: 1072: 1062: 1052: 1028: 1022: 1021: 1019: 1017: 994: 988: 987: 977: 945: 939: 938: 902: 896: 895: 887: 881: 880: 868: 862: 861: 853: 847: 846: 844: 842: 816: 807: 806: 804: 802: 779: 770: 769: 767: 765: 748:Ocular Pathology 742: 733: 732: 730: 728: 713: 704: 703: 701: 699: 694:on 3 August 2020 684: 609: 597: 585: 565: 541:Anton's Syndrome 493:Whereas loss of 470: 461: 184:(/ˈmakjʊlə/) or 170:edit on Wikidata 167: 51: 39: 38: 21: 1966: 1965: 1961: 1960: 1959: 1957: 1956: 1955: 1941: 1940: 1939: 1934: 1874: 1839: 1828:Capsule of lens 1783:Lacrimal system 1750: 1740: 1700:Parafoveal area 1695:Perifoveal area 1678: 1622:Horizontal cell 1598: 1519: 1486: 1453: 1449:Sattler's layer 1420: 1413: 1407: 1364: 1309: 1300:Schlemm's canal 1278: 1270: 1262:Anatomy of the 1260: 1205: 1200: 1199: 1192: 1174: 1170: 1160: 1158: 1149:Helseth, Erek. 1147: 1143: 1133: 1131: 1122: 1121: 1114: 1104: 1102: 1100: 1080: 1076: 1029: 1025: 1015: 1013: 1011: 995: 991: 946: 942: 903: 899: 888: 884: 869: 865: 854: 850: 840: 838: 836: 817: 810: 800: 798: 796: 780: 773: 763: 761: 759: 743: 736: 726: 724: 715: 714: 707: 697: 695: 686: 685: 681: 676: 671: 652:Cherry-red spot 627: 620: 613: 610: 601: 598: 589: 586: 577: 566: 557: 515:macular sparing 488: 487: 486: 485: 473: 472: 471: 463: 462: 451: 419: 388: 378:After death or 348: 250: 174: 62: 35: 28: 23: 22: 15: 12: 11: 5: 1964: 1954: 1953: 1936: 1935: 1933: 1932: 1927: 1922: 1917: 1912: 1907: 1902: 1897: 1892: 1886: 1884: 1880: 1879: 1876: 1875: 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Retrieved 1154: 1144: 1132:. Retrieved 1127: 1103:. Retrieved 1088: 1077: 1040: 1036: 1026: 1014:. Retrieved 999: 992: 957: 954:i-Perception 953: 943: 910: 906: 900: 891: 885: 876: 872: 866: 857: 851: 839:. Retrieved 824: 799:. Retrieved 784: 762:. Retrieved 747: 725:. Retrieved 721:the original 696:. Retrieved 692:the original 682: 530: 522: 514: 508: 492: 489: 438: 435: 420: 377: 349: 333: 314: 309: 282:optical axis 267: 244:, "yellow". 241: 237: 232: 225: 222: 186:macula lutea 185: 181: 179: 133:A15.2.04.021 109:macula lutea 108: 36: 18:Macula lutea 1910:Eye disease 1890:Keratocytes 1779:Conjunctiva 1736:Ora serrata 1674:Muller glia 1638:Midget cell 1358:Endothelium 1348:Dua's layer 960:(2): 1–45. 380:enucleation 364:carotenoids 361:xanthophyll 98:Identifiers 1751:of the eye 1724:Optic disc 1482:Pars plana 1353:Descemet's 1333:Epithelium 1161:23 October 1157:. Medscape 1105:7 November 1016:7 November 892:The Retina 841:7 November 801:7 November 764:7 November 727:11 October 674:References 482:optic disc 357:zeaxanthin 336:cone cells 1729:Optic cup 1614:Cone cell 1268:human eye 698:24 August 537:blindness 501:known as 439:centralis 340:rod cells 306:perifovea 302:parafovea 274:human eye 248:Structure 218:perifovea 214:parafovea 194:human eye 80:human eye 59:human eye 1945:Category 1618:Rod cell 1423:(middle) 1338:Bowman's 1134:9 August 1069:25709776 984:32489576 879:: 11–96. 618:See also 574:artifact 417:Function 1870:Choroid 1771:Eyebrow 1715:Foveola 1531:(inner) 1431:Choroid 1279:(outer) 1266:of the 1060:4329711 975:7238452 935:2338596 915:Bibcode 499:disease 404:Foveola 386:Regions 290:foveola 272:of the 220:areas. 202:foveola 192:of the 121:D008266 72:Part of 67:Details 57:of the 1865:Retina 1775:Eyelid 1767:Adnexa 1690:Macula 1670:K cell 1666:M cell 1662:P cell 1538:Layers 1529:Retina 1500:Stroma 1343:Stroma 1328:layers 1323:Limbus 1315:Cornea 1287:Sclera 1227:002252 1188:  1096:  1067:  1057:  1007:  982:  972:  933:  832:  792:  755:  423:acuity 353:lutein 304:, and 270:retina 238:macula 216:, and 190:retina 182:macula 87:System 76:Retina 55:retina 42:Macula 1883:Other 1787:Orbit 1705:Fovea 1683:Other 1620:) → ( 1603:Cells 1505:Pupil 1421:tunic 1264:globe 427:cones 392:Fovea 346:Color 298:fovea 242:lutea 235:Latin 210:fovea 168:[ 157:58637 104:Latin 1823:Lens 1808:Iris 1656:) → 1632:) → 1624:) → 1492:Iris 1186:ISBN 1163:2011 1136:2021 1107:2014 1094:ISBN 1065:PMID 1018:2014 1005:ISBN 980:PMID 931:PMID 877:6–10 843:2014 830:ISBN 803:2014 790:ISBN 766:2014 753:ISBN 729:2014 700:2022 410:Umbo 355:and 286:umbo 278:eyes 198:umbo 180:The 145:6784 128:TA98 116:MeSH 1628:→ ( 1055:PMC 1045:doi 970:PMC 962:doi 923:doi 528:.) 319:or 152:FMA 140:TA2 78:of 1947:: 1785:, 1781:, 1777:, 1773:, 1672:, 1668:, 1664:, 1660:: 1652:, 1648:, 1644:, 1640:, 1616:, 1225:: 1153:. 1126:. 1115:^ 1063:. 1053:. 1039:. 1035:. 978:. 968:. 958:11 956:. 952:. 929:. 921:. 909:. 875:. 811:^ 774:^ 737:^ 708:^ 568:A 445:. 372:mg 300:, 296:, 292:, 288:, 212:, 208:, 204:, 200:, 1789:) 1769:( 1636:( 1612:( 1255:e 1248:t 1241:v 1194:. 1165:. 1138:. 1109:. 1071:. 1047:: 1041:9 1020:. 986:. 964:: 937:. 925:: 917:: 911:7 845:. 805:. 768:. 731:. 702:. 648:) 644:( 626:. 576:. 172:] 34:. 20:)

Index

Macula lutea
Macula (disambiguation)

retina
human eye
Retina
human eye
System
Visual system
Latin
MeSH
D008266
TA98
A15.2.04.021
TA2
6784
FMA
58637
Anatomical terminology
edit on Wikidata
retina
human eye
umbo
foveola
foveal avascular zone
fovea
parafovea
perifovea
macular degeneration
Latin

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