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128 Possible Causes for Dark Choroid

  • Presbycusis

    Front part made of ciliary muscle and iris Pupil An actual hole in eye Ciliary muscle Contract or constrict pupil Retina Night and day vision Retina; Rods Dark, at night[] Temperature change Function of nerves Detect particular stimulus, convert stimulus to nerve impulse, perceived as sensation in CNS Sclera White of eye, tough to protect Choroid[]

  • Polymyalgia Rheumatica

    Left eye with arteritic AION, showing choroidal filling defects (dark areas) during the early stages of AION. (Reproduced from Hayreh ) Table of Contents Back Next[]

  • Adenoma

    Adenomas appear dark. “block fluorescence” on fluorescein angiography.[] Tumors of the RPE usually are dark black, often invade the sensory retina, develop a dilated retinal feeding artery and draining vein, and cause exudative retinopathy. 1,[] Characteristics of RPE adenocarcinoma are a female patient with a dark intraocular tumor and associated with iritis and/or uveitis.[]

  • Stargardt Macular Degeneration

    Moreover, fluorescein angiography is a useful method to distinguish STGD1 from STGD3 by identifying a dark choroid on examination.[] Fluorescein angiography reveals the characteristic dark choroid (''silence choroidien'') in aproximately 85% of the patients.[] The back of the eye is almost normal except for the typical “silent” (dark) choroid that shows up in fluorescein angiography.[]

  • Lentigo Maligna Melanoma

    Ocular melanoma accounts for around 5 percent of melanomas and occurs in the iris (the white of the eye), ciliary body, or choroid.[] Other symptoms can include the appearance of a dark spot on the white of the eye, a loss of peripheral vision, seeing flashing lights, floaters (seeing specks floating in[]

  • Uveitis

    There will be yellowish or dark areas of inflammation on the choroid and the retina. The blood vessels in the retina develop a sheath or covering of inflammatory tissue.[] Source : Patient Organ Uveitis reached the uvea of the eye including the choroid, ciliary body and the iris. Symptoms Uveitis can affect one or both eyes.[] Symptoms may develop rapidly and can include: Blurred vision Dark, floating spots in the vision Eye pain Redness of the eye Sensitivity to light Source : Medlineplus Frequency[]

  • Myopic Macular Degeneration

    These changes result in visual impairment, changes in contrast sensibility, lower dark adaptation, visual field changes and electrophysiological changes [ 2, 5 - 7 ].[] The progressive expansion of the eyeball leads to the formation of posterior staphyloma and degenerative changes of the sclera, choroid, Bruch's membrane, retinal pigment[]

  • Retinitis Pigmentosa

    Occasional bone spiculelike pigmentation was seen in this region, but the choroidal vasculature appeared normal.[] Results of fundus examination demonstrated RPE and choroidal atrophy in the inferior midperiphery with normal retina present anteriorly.[] Final dark adaptation threshold was elevated at 3.0 log cd/m 2 OD and 3.1 log cd/m 2 OS (normal rod mean, 5.00; normal rod upper limit, 4.65 log cd/m 2 ).[]

  • Autosomal Dominant Rhegmatogenous Retinal Detachment

    Fluorescein angiography may reveal abnormalities, particularly a dark fundus (the so-called silent choroid) ( 11 ) before any fundus abnormalities become apparent.[] Dark adaptometry demonstrates progressive nyctalopia with progressive deterioration of the retina.[] The dark fundus and pisciform lesions are the result of excessive amounts of lipofuscin in the pigment epithelium. FIGURE 14.8.[]

  • Anterior Uveitis

    There will be yellowish or dark areas of inflammation on the choroid and the retina. The blood vessels in the retina develop a sheath or covering of inflammatory tissue.[]

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