青光眼

青光眼

青光眼是全球第二大致盲原因,也是不可逆性失明的主要原因。青光眼是由眼压升高引起的,眼压升高会逐渐损害将视觉信息传递到大脑的视神经 — 视神经的任何损害都会导致视力丧失。

由于疾病进展缓慢且隐匿,等到患者意识到病情的严重性时已经为时太晚。当症状出现时,通常已达到中度至重度神经损伤。这就是为什么青光眼被称为“安静的视力窃贼”。

青光眼导致视力丧失

青光眼类型

青光眼通常进展缓慢,最常见的类型是原发性开角型青光眼和慢性闭角型青光眼。这两种青光眼常困扰着 40 多岁或 50 多岁的人群。青光眼可以遗传,这意味着青光眼患者的亲属患青光眼的风险更高。

原发性开角型青光眼

在许多国家,原发性开角型青光眼是最常见的。它进展缓慢,早期几乎没有任何症状。

慢性闭角型青光眼

亚洲人容易患闭角型青光眼,新加坡是世界上记录在案发病率最高的国家。类似于原发性开角型青光眼,闭角型青光眼在慢性形式中逐渐发展且不易被察觉。它是由于眼球引流通路阻塞增加,导致眼压长期升高引起的。

急性闭角型青光眼

这种青光眼通常影响中年或老年妇女。由于眼角液体排出通道阻塞,导致眼内液体压力快速升高。由于症状突然而剧烈,患者应立即寻求治疗。

继发性青光眼

眼球发炎或白内障过于严重会导致青光眼。其他导致青光眼的成因包括眼科手术或眼部创伤。

symptoms

青光眼的症状

由于青光眼首先影响周边视力且病情进展缓慢,原发性开角型青光眼和慢性闭角型青光眼患者在早期往往没有任何症状。大多数患者在中心视力开始恶化时才意识到自己患有青光眼,那时可能已经造成一定程度的永久性视神经损伤。

此外,急性闭角型青光眼会导致明显的眼睛疼痛、发红、视力模糊以及看灯光周围时产生光晕现象。发生这种情况时,请立即就医。

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risks

风险因素

请注意以下青光眼的风险因素:

  • 60岁以上
  • 青光眼家族史
  • 糖尿病和高血压
  • 过高或过低的近视或远视
  • 眼睛受伤或接受过某些类型的眼科手术

密切关注您的眼部健康,按照眼科医生的建议定期进行全面眼科检查以降低患慢性青光眼的几率。

青光眼症状

青光眼会逐渐恶化并危害视力。大多数人在疾病早期阶段只出现轻微症状,直到晚期才意识到患病。尽早进行青光眼眼部检查、及早发现病情并接受最合适的最佳治疗对于保护眼睛和视力至关重要。

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Our Glaucoma Specialist
Dr Annabel Chew

Dr Annabel Chew is the Senior Consultant Ophthalmologist at Lang Eye Centre.

She was formerly a Senior Consultant of the Glaucoma Department at the Singapore National Eye Centre (SNEC), and is currently a Visiting Consultant at SNEC. She completed her medical training with the Faculty of Medicine, National University of Singapore (NUS) in 2005. She completed her Ophthalmology residency training in Singapore and was awarded the Ministry of Health Training Award in 2010 for her specialist training. She obtained her Master of Medicine (Ophthalmology) from NUS in 2011, and her specialist accreditation in Ophthalmology. She qualified as a Fellow of the Academy of Medicine, Singapore (FAMS), and a Fellow of the Royal College of Surgeons of Edinburgh, and successfully completed her glaucoma sub-specialty fellowship training at SNEC.

Dr Chew specialises in cataract surgery and the treatment of general ophthalmology conditions including retinal and corneal diseases. She sub-specialises in glaucoma and has experience in managing patients with complex glaucoma. Her clinical interests include glaucoma lasers, trabeculectomy, tube shunt surgery, minimally invasive glaucoma surgery, cataract surgery, and implantation of toric and multifocal lenses for the correction of myopia, astigmatism and presbyopia.

Dr Chew was the Clinical Director of the Primary Eyecare Clinic and Community Eyecare clinic at SNEC. She was also the lead for community eye investigation units in the Regional Eye Service. She was instrumental in setting up the Glaucoma Observation Clinic (GLOC) at SNEC, and had overseen the planning and implementation of GLOC services at SNEC satellite sites.