Thieme R, Müller W, Köhler U
Albrecht Von Graefes Arch Klin Exp Ophthalmol. 1979 Apr 2;210(2):151-8. doi: 10.1007/BF00410001.
The authors studied the visual fields in 100 healthy persons of different ages before and 10 min after oculopression. They found a depression of the I/2 isopter mostly in the nasal lower quarter of the visual field in persons over 60 years old, due to a disturbed or diminished vascular compensation of bulbus compression. They consider that oculopression might have clinical importance as an indirect provocation test of the cellular blood circulatory system.