WordNet

shaped like a ring (同)annulate, annulated, circinate, ringed, ring-shaped, doughnut-shaped
an isolated area of diminished vision within the visual field

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1. 視神経の先天性および後天性異常 congenital anomalies and acquired abnormalities of the optic nerve
2. 非動脈炎性前部虚血性視神経症：臨床的特徴および診断 nonarteritic anterior ischemic optic neuropathy clinical features and diagnosis
3. 小児における片頭痛の病態生理、臨床的特徴、および診断 pathophysiology clinical features and diagnosis of migraine in children
4. 成人における片頭痛の病態生理、臨床症状、および診断 pathophysiology clinical manifestations and diagnosis of migraine in adults
5. 網膜色素変性症：臨床症状および診断 retinitis pigmentosa clinical presentation and diagnosis

Bemme S1, Pleyer U2, Salehi N3, Naxer S3, Callizo J3, Hoerauf H3, Feltgen N3.
Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft.Ophthalmologe.2016 Jan;113(1):66-70. doi: 10.1007/s00347-015-0012-z.
Acute annular outer retinopathy (AAOR) is a very rare variant of acute zonal occult outer retinopathy (AZOOR). Both variants are characterized by the perception of a progressive visual field defect and can be accompanied by photopsia. In contrast to AZOOR, a progressive whitish and annular demarcati
PMID 25930180

Molecular Heterogeneity Within the Clinical Diagnosis of Pericentral Retinal Degeneration.

Matsui R, Cideciyan AV, Schwartz SB, Sumaroka A, Roman AJ, Swider M, Huang WC, Sheplock R, Jacobson SG.
Investigative ophthalmology & visual science.Invest Ophthalmol Vis Sci.2015 Sep;56(10):6007-18. doi: 10.1167/iovs.15-17174.
PURPOSE: To characterize in detail the phenotype and genotype of patients with pericentral retinal degeneration (PRD).METHODS: Patients were screened for an annular ring scotoma ranging from 3° to 40° (n = 28, ages 24-71) with kinetic perimetry. All patients had pigmentary retinopathy in the regio
PMID 26393467

Scotoma analysis of 10-2 visual field testing with a red target in screening for hydroxychloroquine retinopathy.

Browning DJ1, Lee C1.
Clinical ophthalmology (Auckland, N.Z.).Clin Ophthalmol.2015 Aug 20;9:1499-509. doi: 10.2147/OPTH.S87850. eCollection 2015.
OBJECTIVE: To quantify the variability of scotomas detected by 10-2 visual field (VF) testing with a red target in patients taking hydroxychloroquine without and with retinopathy.DESIGN: Retrospective review of clinical charts and VFs.METHODS: Twenty-four patients taking hydroxychloroquine without r
PMID 26316692

網膜色素変性症：本性では桿体細胞から冒されるが、同細胞は視野の20-30°に多いため輪状暗点を呈する。
緑内障：ブエルム暗点とは、マリオット盲点の上方または下方から10-20°の範囲で鼻側に向かう暗点であり緑内障に特徴的である。これは弓状暗点とも呼ばれる。上下の暗点が鼻側で繋がれば輪状暗点として認識される。