abnormal refraction

简明释义

异常折光

英英释义

例句

1.The optometrist noted an instance of abnormal refraction in the patient's eye examination.

验光师在患者的眼部检查中注意到了一例异常折射。

2.Patients with abnormal refraction may experience difficulty focusing on objects.

有异常折射的患者可能会在对物体聚焦时遇到困难。

3.During the exam, the doctor explained how abnormal refraction could lead to vision problems.

在检查过程中，医生解释了异常折射如何导致视力问题。

4.Corrective lenses are often prescribed to address abnormal refraction issues.

通常会开具矫正镜片来解决异常折射问题。

5.Children with abnormal refraction should be monitored closely for signs of learning difficulties.

有异常折射的儿童应密切监测学习困难的迹象。

作文

In the realm of vision and optics, understanding the phenomenon of abnormal refraction is crucial for diagnosing and treating various eye conditions. Refraction refers to the bending of light as it passes through different mediums, such as air and the lens of the eye. When light enters the eye, it is refracted by the cornea and the lens to focus images on the retina. However, when this process does not occur as expected, it leads to abnormal refraction (异常折射), which can result in vision problems such as nearsightedness, farsightedness, or astigmatism.Nearsightedness, or myopia, occurs when the eye is too long relative to its focusing power. This causes light rays to converge before they reach the retina, resulting in blurred distance vision. Conversely, farsightedness, or hyperopia, happens when the eye is too short. In this case, light rays converge beyond the retina, leading to difficulty focusing on close objects. Both conditions exemplify how abnormal refraction (异常折射) disrupts normal visual acuity.Astigmatism is another common condition associated with abnormal refraction (异常折射). It arises when the cornea or lens has an irregular shape, causing light to focus on multiple points in the eye instead of a single point on the retina. This results in distorted or blurred vision at all distances. Understanding the mechanics of abnormal refraction (异常折射) is essential for optometrists and ophthalmologists as they develop treatment plans for their patients.The diagnosis of abnormal refraction (异常折射) typically begins with a comprehensive eye examination. During this exam, various tests are conducted to measure the eye's ability to refract light accurately. One common method is the use of a phoropter, where patients look through different lenses to determine which prescription provides the clearest vision. Additionally, autorefractors can provide automated measurements of refractive error, helping to identify abnormal refraction (异常折射) more efficiently.Once diagnosed, several treatment options are available for correcting abnormal refraction (异常折射). Eyeglasses are the most common solution, providing a simple way to alter the path of light entering the eye. Contact lenses offer a more discreet alternative, sitting directly on the eye's surface. For those seeking a permanent solution, refractive surgery, such as LASIK, reshapes the cornea to improve focusing power and reduce dependency on corrective lenses.In conclusion, abnormal refraction (异常折射) plays a significant role in our understanding of vision and eye health. By recognizing the various types of refractive errors and their implications, we can better appreciate the importance of regular eye examinations and the advancements in corrective treatments. As technology continues to evolve, the future looks promising for those affected by abnormal refraction (异常折射), offering hope for clearer vision and improved quality of life.