retinal

简明释义

英[ˈretɪnl]美[ˈretɪnl]

adj. 视网膜的

n. [生化]视黄醛（等于 retinene）

英英释义

单词用法

同义词

反义词

例句

1.Oxidative stress leads to retinal diseases like age-related macular degeneration (AMD) and glaucoma.

氧化压力导致视网膜的疾病，像年龄相关性黄斑变性(amd)和青光眼。

2.They had an average 'retinal arteriolar' narrowing of 2.3 microns.

他们的视网膜神经平均缩小了2.3微米。

3.People with pathological myopia who have cataract surgery are at higher risk for retinal detachment.

行白内障手术的病人若同时患有病理性近视，则其发生视网膜脱离的风险将更大。

4.Psychologists of the Gestalt school maintain that objects are recognized as wholes in a parallel procedure: the internal representation is matched with the retinal image in a single operation.

格式塔学派的心理学家认为，物体是在一个平行的过程中被识别为整体的：在一个单一的操作中，内部表征与视网膜图像匹配。

5.Nearly all the children in the study had bleeding in the brain and retinal hemorrhages.

研究中，几乎所有的孩子都有脑出血或者视网膜出血的现象。

6.There are several different ways to build a retinal implant, but all of them use the same underlying mechanism.

制造视网膜植入设备的方式是多种多样的，但是，这些方式使用的潜在机理却都是相同的。

7.It is the most common type of retinal detachment, ahead of tractional and exudative.

这是视网膜脱离最常见的一种类型，比牵拉性和渗出性的病例多发。

8.This image shows a wistar rat retina outlining the retinal vessel network.

照片显示了概括视网膜血管网络的纯种老鼠的视网膜。

9.Researchers are studying the role of retinal 视网膜的 proteins in eye diseases.

研究人员正在研究视网膜的蛋白质在眼病中的作用。

10.The doctor explained that the damage to the retinal 视网膜的 cells could lead to vision loss.

医生解释说，视网膜的细胞损伤可能导致视力丧失。

11.The retinal 视网膜的 detachment requires immediate medical attention.

视网膜的脱落需要立即医疗救助。

12.The retinal 视网膜的 pigment epithelium is crucial for visual function.

视网膜的色素上皮对视觉功能至关重要。

13.A deficiency in vitamin A can affect the production of retinal 视网膜的 pigments.

维生素A缺乏会影响视网膜的色素的生成。

作文

The human eye is a remarkable organ that allows us to perceive the world around us. At the core of our ability to see lies a complex biochemical process involving light-sensitive molecules. One of the most crucial components in this process is a molecule known as retinal, which plays a vital role in the visual cycle. Understanding how retinal functions can provide insights into both normal vision and various eye disorders.When light enters the eye, it is focused onto the retina, which is a layer of tissue at the back of the eye containing photoreceptor cells. These cells, known as rods and cones, are responsible for converting light into electrical signals that the brain interprets as images. The key player in this conversion process is retinal, a derivative of vitamin A. In its inactive form, retinal exists as 11-cis-retinal, which is bound to a protein called opsin.When photons of light strike the 11-cis-retinal, it undergoes a conformational change to become all-trans-retinal. This transformation triggers a series of biochemical reactions within the photoreceptor cells, ultimately leading to the generation of an electrical signal. This signal is then transmitted to the brain via the optic nerve, allowing us to perceive visual information.The importance of retinal cannot be overstated. Without it, our ability to see would be severely compromised. In fact, certain eye conditions, such as retinitis pigmentosa, are directly linked to defects in the production or function of retinal. This degenerative disease affects the photoreceptor cells and can lead to progressive vision loss, highlighting the critical role that retinal plays in maintaining healthy vision.Moreover, research into retinal has implications beyond just understanding vision. Scientists are exploring the potential of retinal in developing treatments for various eye diseases and even in regenerative medicine. For example, there are ongoing studies investigating how to use retinal derivatives to restore vision in individuals who have lost their sight due to retinal diseases.In addition to its biological significance, retinal also has applications in technology. The principles of how retinal converts light into electrical signals have inspired the development of artificial retinas and other optical devices. These innovations aim to mimic the natural processes of the eye, providing hope for those suffering from vision impairments.In conclusion, retinal is a fundamental component of the visual system, essential for our ability to see and interpret the world. Its role in the conversion of light into electrical signals is a fascinating example of the intricate workings of the human body. As research continues to uncover the mysteries of retinal, we can look forward to advancements in both medical treatments and technological innovations that may one day improve the quality of life for millions affected by vision loss.

人眼是一个了不起的器官，使我们能够感知周围的世界。在我们看见事物的能力的核心，是一个复杂的生化过程，涉及到光敏分子。其中一个最关键的成分是被称为视黄醛的分子，它在视觉循环中扮演着重要角色。理解视黄醛的功能可以提供对正常视觉和各种眼部疾病的洞察。当光线进入眼睛时，它被聚焦到视网膜上，视网膜是眼睛后方的一层组织，包含光感受器细胞。这些细胞被称为杆状细胞和锥状细胞，负责将光转化为大脑解读为图像的电信号。这个转换过程中的关键参与者是视黄醛，它是维生素A的衍生物。在其非活性形式中，视黄醛以11-顺式视黄醛的形式存在，与一种叫做视蛋白的蛋白质结合。当光子的光线击中11-顺式视黄醛时，它经历了构象变化，变成全反式视黄醛。这一转变触发了光感受器细胞内的一系列生化反应，最终导致电信号的产生。该信号随后通过视神经传递到大脑，使我们能够感知视觉信息。视黄醛的重要性不容低估。如果没有它，我们的视力将受到严重损害。事实上，某些眼部疾病，如视网膜色素变性，直接与视黄醛的生成或功能缺陷有关。这种退行性疾病影响光感受器细胞，可能导致视力逐渐丧失，突显了视黄醛在维持健康视力中的关键作用。此外，对视黄醛的研究不仅限于理解视力。科学家们正在探索视黄醛在开发各种眼病治疗方法甚至再生医学中的潜力。例如，目前有研究正在调查如何利用视黄醛衍生物来恢复因视网膜疾病而失去视力的个体的视力。除了其生物学意义外，视黄醛还在技术上有应用。视黄醛将光转化为电信号的原理激发了人工视网膜和其他光学设备的发展。这些创新旨在模仿眼睛的自然过程，为那些遭受视力障碍的人提供希望。总之，视黄醛是视觉系统的基本组成部分，对于我们看见和理解世界至关重要。它在将光转化为电信号中的作用是人类身体复杂运作的迷人例子。随着研究不断揭示视黄醛的奥秘，我们期待在医疗治疗和技术创新方面的进展，这些进展可能会改善数百万受视力丧失影响的人的生活质量。