Sains Ma1aysiana 27: 39-46 (1998)                                                                                                      Sains Hayat/

                                                                                                                                                                       Life Sciences

 

Contrast Sensitivity in Malaysian Children and Adult

 

 

Sharanjeet Kaur

Department of Optometry

Faculty of Allied Health Sciences

Universiti Kebangsaan Malaysia

Jalan Raja Muda, 50300 Kuala Lumpur

 

 

ABSTRACT

 

The importance of comparing the results of contrast sensitivity tests to age matched normals has been demonstrated in numerous studies. To date no studies in Malaysia have been done to show the normal values in children and adults using the Pelli-Robson chart. In this study, Pelli-Robson contrast sensitivity was measured for 200 normal healthy observers in the age range of 4 to 30 years. It was found that children in the age range of 4 to 6 years had a statistically significant lower contrast sensitivity of 1.69 ± 0.10 log units binocularly as compared to other subjects between the age group of 7-30 years who had an average contrast sensitivity of 1.82 log units binocularly.

 

ABSTRAK

 

Kepentingan perbandingan keputusan ujian sensitiviti kontras bagi orang normal yang dipadankan dengan umur telahpun ditunjukkan dalam banyak kajian. Sehingga kini, tiada kajian yang telah dilakukan di Malaysia untuk menunjukkan nilai normal bagi kanak-kanak dan orang dewasa dengan menggunakan carta Pelli-Robson. Dalam kajian ini, sensitiviti kontra Pelli-Robson telah diukur untuk 200 pemerhati normal dalam julat umur antara 4 hingga 30 tahun. Didapati bahawa kanak-kanak dalam lingkungan umur hingga 6 tahun mempunyai sensitiviti kontra yang lebih rendah secara bererti. Nilai sensitiviti kontra secara binokular yang didapati bagi kanak-kanak ini adalah sebanyak 1.69 ± 0.10 unit log berbanding dengan nilai min 1.82 unit log bagi subjek berumur antara 7 hingga 30 tahun.

 

 

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