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Refractive Error

Hyperopia

Hyperopia Learn more about Hyperopia – what it is, statistics in Singapore, its causes, symptoms, diagnostic tests, and treatments. What Is Hyperopia? Hyperopia, commonly known as farsightedness, is a refractive error where distant objects can be seen more clearly than nearby objects. This condition occurs when the eyeball is too short or the cornea has […]

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激光眼科手术

激光眼科手术指南 了解有关激光眼科手术的更多信息 – 它是什么、它的类型、用途、合适的候选人、所涉及的程序、风险、费用等等。 什么是激光眼科手术? 激光眼科手术,也被称为屈光手术,是一组通过激光技术重塑角膜的外科手术,其目的是矫正常见的屈光不正问题。 角膜是眼睛的透明前部,负责将光线聚焦到视网膜上,从而形成清晰的图像。当角膜形状异常时,就会导致视力问题。 它能治疗什么? 激光眼科手术主要用于治疗常见的屈光不正,这些是影响眼睛正确聚焦光线到视网膜上的疾病。激光手术矫正的主要屈光不正包括: 近视(Myopia) 症状:远处物体模糊,但近处物体清晰。 原因:眼球过长或角膜弯曲过陡,导致光线聚焦在视网膜前方。 远视(Hyperopia) 症状:近处物体模糊,但远处物体清晰。 原因:眼球过短或角膜弯曲不足,导致光线聚焦在视网膜后方。 散光(Astigmatism) 症状:角膜或晶状体形状不规则,导致视力模糊或失真。 散光可以与近视或远视同时出现。 除了矫正视力,激光眼科手术也可用于治疗其他疾病,如: 癌症 白内障 青光眼 激光眼科手术的种类 以下是几种常见的激光手术类型,每种都有不同的技术特点和适用范围: SMILE(微小切口透镜取出术) 优点:比 LASIK 创伤小。通过飞秒激光在角膜内创建一个透镜形组织并取出,从而矫正近视。 适用于:希望矫正近视的患者。 LASIK(准分子激光原位角膜磨镶术) 特点:通过微型角膜刀或飞秒激光制作角膜瓣,翻开后用准分子激光重塑角膜组织。 适用于:大多数屈光不正患者。 LASEK(激光上皮角膜磨镶术) 特点:结合 LASIK 和 PRK 技术,使用特殊酒精溶液分离上皮组织后,进行激光矫正。 优势:适用于角膜较薄的患者。 PRK(准分子激光角膜切削术) 特点:去除角膜外层上皮组织后,直接用激光矫正屈光不正,之后上皮会自行再生。 适用于:不适合 LASIK 的患者。 激光手术对比 手术种类 LASEK(第一代) LASIK(第二代) SMILE(第三代) 适用近视度数范围 +10.0 D 以上 -15.0 D […]

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Astigmatism

Astigmatism Learn more about Astigmatism – what it is, its causes, symptoms, diagnostic tests, and treatments. Contents What Is Astigmatism? Astigmatism is a common eye condition that occurs when the cornea or lens of the eye has an irregular shape. In a normal eye, the cornea and lens are smooth and evenly curved, helping to […]

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Myopia

Myopia Learn more about Myopia – what it is, statistics in Singapore, its causes, symptoms, diagnostic tests, and treatments. What Is Myopia? Myopia, commonly known as nearsightedness, is a common refractive error of the eye that affects a person’s ability to see distant objects clearly. In individuals with myopia, close-up objects can be seen more […]

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