1. Universiti Teknologi PETRONAS, Department of Electrical and Electronic Engineering, Centre for Intelligent Signal and Imaging Research, Bandar Seri Iskandar, Perak 32610, Malaysia
2. National Healthcare Group Eye Institute, Tan Tock Seng Hospital, Singapore 308433, Singapore
3. Universiti Teknologi PETRONAS, Department of Fundamental and Applied Sciences, Centre for Intelligent Signal and Imaging Research, Bandar Seri Iskandar, Perak 32610, Malaysia