Omar R, Mohammed Z, Knight V F, Basrul M H
Department of Optometry, Faculty of Allied Health Sciences, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia.
Med J Malaysia. 2009 Dec;64(4):289-93.
This study looked at the causes of vision loss, levels of distance, near vision and the use of low vision devices (LVDs) in children studying at special schools in Malaysia. A total of 139 children from two special education schools took part. Visual acuity was measured with and without LVDs. Those who required further assessment were referred to Low Vision Clinic. Near visual acuity in 71 children ranged from N4 to N64. Sixty eight children could not read the N64 chart or they were totally blind. Only eight students were using LVDs before intervention. Seventy one children were referred for low vision assessment and 48 were found to benefit from the LVDs prescribed. The major cause of visual impairment was cataract (17%). Hand held magnifier was the most preferred LVD. Majority of the children attending the blind schools had residual vision but did not have LVDs. LVDs are able to significantly improve near visual acuity and hence there is a need to prescribe and train the children to use the LVDs.
本研究探讨了马来西亚特殊学校儿童视力丧失的原因、远视力和近视力水平以及低视力设备（LVD）的使用情况。来自两所特殊教育学校的139名儿童参与了研究。测量了使用和不使用LVD时的视力。那些需要进一步评估的儿童被转介到低视力诊所。71名儿童的近视力范围从N4到N64。68名儿童无法阅读N64视力表或完全失明。干预前只有8名学生使用LVD。71名儿童被转介进行低视力评估，其中48名儿童被发现从所开的LVD中受益。视力损害的主要原因是白内障（17%）。手持放大镜是最受欢迎的LVD。大多数就读于盲人学校的儿童有残余视力，但没有LVD。LVD能够显著提高近视力，因此有必要为儿童开出处方并培训他们使用LVD。
