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 Hoffmann's reflex /  The finger flexor reflex ranks among physiological myotatic (proprioceptive) reflexes on the upper limb with C8 segmental innervation . flick the patient's nail of the middle finger with your thumb. The test is positive if you're able to observe quick adduction of the thumb 👍 and flexion of the index ☝️ finger 

 

 

 

  https://images.app.goo.gl/Y3jxBCU7XBQKn7MR6 Rhegmatogenous retinal detachment is the most common type of retinal detachment. It can happen if you have a small tear or break in your retina. When your retina has a tear or break, the gel-like fluid in the center of your eye (called vitreous) can get behind your retina.