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関連する概念動画

Focusing of Light in the Eye01:16

Focusing of Light in the Eye

Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category, whereas...
Glaucoma: Overview01:25

Glaucoma: Overview

Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
Angle Closure Glaucoma: Treatment01:28

Angle Closure Glaucoma: Treatment

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...
Open Angle Glaucoma: Treatment01:27

Open Angle Glaucoma: Treatment

In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
Drugs such as carbonic anhydrase inhibitors, α2- and...
Geometry of Hyperbolas01:30

Geometry of Hyperbolas

A hyperbola consists of all points where the absolute difference of distances to two fixed points, called foci, remains constant. The standard equation isEach branch extends infinitely and approaches two asymptotes, which guide the curve’s behavior. The parameters a and b define key features: a measures the distance from the center to each vertex along the transverse axis, while b influences the slopes of the asymptotes. The asymptotes have equationsA rectangle centered at the origin with...

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関連する実験動画

Updated: May 22, 2026

Inducement and Evaluation of a Murine Model of Experimental Myopia
07:20

Inducement and Evaluation of a Murine Model of Experimental Myopia

Published on: January 22, 2019

近視 (Myopia) とは,近視 (Myopia) を意味する.

Ian G Morgan1, Kyoko Ohno-Matsui, Seang-Mei Saw

  • 1ARC Centre of Excellence in Vision Science, Research School of Biology, College of Medicine, Biology and Environment, Australian National University, Canberra, Australia. ian.morgan@anu.edu.au

Lancet (London, England)
|May 8, 2012
PubMed
まとめ
この要約は機械生成です。

近視,または近視は,東アジアで増大する健康上の問題であり,学校を卒業した人の90%までに影響しています. 高度の近視は,学生の20%に影響を及ぼす深刻な視力喪失につながる可能性があります.

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Press Needle: A Traditional Chinese Medicine Therapy for Myopia Patients with Dry Eye

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関連する実験動画

Last Updated: May 22, 2026

Inducement and Evaluation of a Murine Model of Experimental Myopia
07:20

Inducement and Evaluation of a Murine Model of Experimental Myopia

Published on: January 22, 2019

Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients
07:06

Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients

Published on: March 29, 2022

Press Needle: A Traditional Chinese Medicine Therapy for Myopia Patients with Dry Eye
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科学分野:

  • オフタルモロジック (眼科)
  • 公共衛生は公衆衛生である.
  • 遺伝学 遺伝学とは

背景:

  • 近視の罹患率は東アジアで非常に高く,学校を卒業した人の80~90%に達しています.
  • 高度の近視は,中学校卒業生の10~20%に影響し,視力を脅かす状態につながります.
  • 同じような傾向は,それほど深刻ではないが,世界中で観察されています.

研究 の 目的:

  • 東アジアにおける近視の増加に寄与する要因を調査する.
  • 近視の発達と進行に対する遺伝的,環境的影響を調査する.
  • 近視の予防と治療のための現行および潜在的な介入をレビューする.

主な方法:

  • 近視の流行に関する文献レビューと疫学データの分析.
  • 高近視に関連した遺伝子を特定する遺伝学的研究の検討.
  • 教育的なプレッシャーや屋外での時間を減らすなど,環境要因の評価.
  • 臨床試験と光学および薬理学的介入に関する研究のレビュー.

主要な成果:

  • 高度の近視の流行は,東アジアの都市部の人口における教育の需要の増加と屋外活動減少と関連しています.
  • 学校近視の主な遺伝子は特定されていませんが,いくつかの遺伝子は高近視と関連しています.
  • 遺伝子と環境の相互作用と多遺伝的要因は,近視の変異に寄与する可能性が高い.
  • 近視の予防と病理的近視の治療のための有望な介入は存在しますが,さらなる検証が必要です.

結論:

  • 近視は,環境的および潜在的に遺伝的要因によって引き起こされる東アジアにおける重要な公衆衛生問題である.
  • 遺伝子と環境の相互作用を理解することは,近視の治療に不可欠です.
  • 近視の流行とその影響と闘うために,さらなる研究と介入の検証が必要である.