眼光障碍症是什么 眼光障碍症是什么
相关实验视频
Updated: Jul 6, 2026

07:06
Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients
Published on: March 29, 2022
1Department of Ophthalmology, Jules Stein Eye Institute, University of California, Los Angeles 90095, USA. coleman@jsei.ucla.edu
Lancet (London, England)
|November 30, 1999
概括
玻璃眼病影响全球数以百万计的人,导致不可逆转的失明. 早期检测对于管理这种可治疗的视神经疾病和预防视力丧失至关重要.
科学领域:
- 眼科医生 眼科 眼科
- 公共卫生 公共卫生
背景情况:
- 据估计,全球约有6680万人患有青光眼,预计到2000年,将有670万人双盲.
- 尽管有公共教育,诊断率仍然很低,即使在发达国家,留下许多未被诊断.
- 玻璃眼的视力障碍显著影响日常活动,如驾驶和社交互动.
研究的目的:
- 为了强调早期发现青光眼的关键重要性.
- 为了强调格劳科马虽然可以治疗,但会导致不可逆转的视力丧失.
- 强调及时诊断和管理的必要性.
主要方法:
- 诊断依赖于光盘检查和视野评估,而不仅仅依赖于眼睛压力水平.
- 区分初级开角格劳科马和初级闭角格劳科马,并指出不同的风险因素.
- 审查治疗方法,承认尽管有相似的药物选择,但患者管理有所不同.
主要成果:
- 1998年的一项随机临床试验表明,降低眼内压力 (IOP) 的好处在于,眼内压力为24毫米升或更低的格洛科马患者.
- 这项试验提供了证据,证明医疗或手术干预在治疗青光眼的有效性.
- 强调眼存在有效的治疗方法,加强了早期干预的重要性.
结论:
- 由于其可治疗的性质和视力障碍的不可逆转性质,早期发现青光眼非常重要.
- 及时诊断和管理可以预防或减缓疾病的进展,并保持视力.
- 在公共教育和查方面持续努力至关重要,以提高诊断率并减少与眼相关的全球失明负担.
相关概念视频
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: 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...
Accessory Structures of the Eye
Optical perception, or vision, is an extraordinary sense dependent on converting light signals received via the ocular organs. These organs, known as eyes, are securely positioned within the bony cavities of the skull, called orbits. The orbits serve a dual purpose: a protective shield for the ocular globes and a stable attachment point for the soft ocular tissues. The eye's external protective mechanisms include the eyelids, which are edged with lashes that act as a barrier against foreign...
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 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...
Diabetic Retinopathy
DefinitionDiabetic retinopathy is a microvascular complication of diabetes affecting the retinal blood vessels.Risk FactorsDiabetic retinopathy is present in almost all individuals with type 1 diabetes and more than 60% of those with type 2 diabetes after two decades of disease.The risk increases with poor glycemic control, hypertension, dyslipidemia, smoking, pregnancy, and puberty.Although cataracts and glaucoma are also more frequent in people with diabetes, retinopathy remains the leading...

