1 Ayesha Md Zain Department of Ophthalmology, Pusat Perubatan Universiti Kebangsaan Malaysia, Jalan Yaacob Latiff, 56000 Cheras, Kuala Lumpur, Malaysia.
2 Umi Kalthum Md Noh (Corresponding author) Department of Ophthalmology, Pusat Perubatan Universiti Kebangsaan Malaysia, JalanYaacobLatiff, 56000 Cheras, Kuala Lumpur, Malaysia. Email: umi_fizul@yahoo.com.
3 Jemaima Che' Hamzah Department of Ophthalmology, Pusat Perubatan Universiti Kebangsaan Malaysia, Jalan Yaacob Latiff, 56000 Cheras, Kuala Lumpur, Malaysia.
4 Faridah Hanom Annuar Department of Ophthalmology, Pusat Perubatan Universiti Kebangsaan Malaysia, Jalan Yaacob Latiff, 56000 Cheras, Kuala Lumpur, Malaysia.