all medical and surgical activities and expertise in ophthalmology; the company may also grant loans or guarantees to associates or third parties if it serves its interests; the company may invest and take participations in other companies, establish branches and subsidiaries, both in Switzerland and abroad, as well as acquire, hold, manage, administer and dispose of real estate; however, the company may only hold, directly or indirectly, real estate in Switzerland if it has an exclusively commercial use; the company may carry out all commercial, financial and real estate transactions related directly or indirectly to its purpose.