Credits are awarded for attendance (1day absence is possible) and for the successful completion of the final test (80% correct answers). Rigorous examination can not be completed earlier than one week after the granting of credit. Instructions for teaching: The beginning of lecture is at 8 am on Monday, meeting is in the teaching room in Department of Ophthalmology. Thursday lecture is taught at the Department of Ophthalmology at the University Children's Hospital. Bring slippers and white robe.