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相关概念视频

Angle Closure Glaucoma: Treatment01:28

Angle Closure Glaucoma: Treatment

463
Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...
463
Adjusting a Traverse01:12

Adjusting a Traverse

53
In the site survey of a four-sided traverse, internal angles are essential to ensure geometric accuracy. The survey revealed that the sum of the measured internal angles was 359 degrees and 48 minutes, which is 12 minutes less than the expected 360 degrees. This discrepancy signals an error likely arising from measurement inaccuracies during the fieldwork.To rectify this error, the adjustment process involved distributing the 12-minute shortfall equally across the four internal angles. By...
53
Design Example: Traverse Angle Computations01:25

Design Example: Traverse Angle Computations

74
Traverse angle computations are a critical component of surveying, used to compute the internal angles within a closed traverse. A traverse consists of a series of connected lines forming a closed loop, often used for land boundary delineation or mapping. Calculating the internal angles ensures accuracy in the traverse geometry and is essential for checking survey data integrity.The process begins with known azimuths and bearings of the traverse sides. Internal angles at each vertex are...
74

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相关实验视频

Updated: Jun 18, 2025

Comparison of Three Clinical Stereoscopic Methods for Measuring Binocular Visual Function During Amblyopic Treatment in Unilateral Amblyopia
06:19

Comparison of Three Clinical Stereoscopic Methods for Measuring Binocular Visual Function During Amblyopic Treatment in Unilateral Amblyopia

Published on: September 27, 2024

207

北京角关闭进展研究:设计和方法论.

Zhi-Qiao Liang1,2, Kang-Yi Yang1,2, Kun Lv1,2

  • 1Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, Department of Ophthalmology, Peking University People's Hospital, Eye Diseases and Optometry Institute, Beijing, China.

Frontiers in medicine
|August 1, 2024
PubMed
概括

北京角关闭进展研究 (BAPS) 追踪了在中国5年内,初级角关闭嫌疑人 (PACS) 的进展到初级角关闭 (PAC) 或眼光 (PACG). 它旨在确定这种视力威胁的疾病的危险因素.

关键词:
发生率的发生率.主要关闭角度的关闭角度主要角度闭合的光眼 (Glaucoma)主要接近角度的嫌疑人视角关闭的进展.有关风险因素的风险因素.

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Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential
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科学领域:

  • 眼科医生 眼科 眼科
  • 玻璃眼研究研究 玻璃眼研究
  • 公共卫生 公共卫生

背景情况:

  • 主要闭角光眼 (PACG) 是全球不可逆转失明的主要原因.
  • 早期检测和干预主角闭合嫌疑人 (PACS) 对于防止进展到PACG至关重要.
  • 关于亚洲人群中PACS进展的发病率和风险因素的数据有限.

研究的目的:

  • 为了确定PACS在5年内进展为初级近视角 (PAC) 或初级近视角玻璃眼 (PACG) 的发病率.
  • 确定与PACS进展相关的潜在风险因素.
  • 帮助重新定义高风险个体使用PACS进行有针对性的管理.

主要方法:

  • 这是一项前性,多中心,非干预性试验,涉及825名患有PACS的中国城市成年人.
  • 标准化基线检查包括视敏度,眼内压力 (IOP),光盘评估,视野测试,OCT和超声波生物显微镜.
  • 五年来每年进行一次后续检查,包括急诊室的急性角关闭发作.

主要成果:

  • 数据收集正在进行中;五年发病率和风险因素分析正在等待.
  • 该研究旨在提供有关PACS进展的可靠流行病学数据.
  • 在研究完成后,将分析基线特征和风险因素关联.

结论:

  • 北京角关闭进展研究 (BAPS) 将为大规模的中国队列中PACS的自然历史提供关键的见解.
  • 预计这些发现将为临床指导方针提供信息,并改善关闭角度疾病的管理.
  • 该研究旨在加强对PACG视力损失高风险个体的识别和治疗.