1. Ophthalmology Unit, Department of Medical Applications of Laser, National Institute of Laser Enhanced Sciences, Cairo University, Giza, Egypt.
2. Biophysics and Laser Science Unit, Vision Science Department, Research Institute of Ophthalmology, Giza, Egypt.
3. Pharmaceutical Technology Unit, Department of Medical Applications of Laser, National Institute of Laser Enhanced Sciences, Cairo University, Egypt.
4. Medical Retina unit, Retina Department, Research Institute of Ophthalmology, Giza, Egypt.