Opthalmodynamometry

• Measurement of the blood pressure in the vessels of the retina of the eye.
• A small instrument is pressed against the eye until the vessels are seen ( through an opthalmoscope ) to collapse.
• The pressure recorded by instrument reflects the pressure within the vessels of the retina.
• In certain disorders of blood circulation to the eye, the pressure in the vessels is reduced and the vessels can be made to collapse by a lower than normal pressure on the eye ball.