Non-Organic Visual Loss

Power point of case presentation of 12 year old girl with recurrent monocular visual loss. Examination is normal. Differential diagnosis discussed, including non-organic visual loss. Diagnostic testing for non-organic visual loss reviewed. Slide 4: Figure 1: Table of exam findings Slide 5: Figure 2: Table of exam findings continued Slide 16: Figure 3: Diagram of visual angle (Taken from http://wiki.bethanycrane.com/introducingtheeye) Slide 17: Figure 4: Menace reflex - blinking in response to threat Slide 18: Figure 5: Signature testing Slide 19: Fig 6 (top): Proprioception testing ; Figure 7 (bottom): Optokinetic drum testing Slide 20: Fig 8: Fogging test with a phoropter (Taken from: Chen CS, Lee AW, Karagiannis A, Crompton JL, Selva D. Practical clinical approaches to functional visual loss. J Clin Neurosci. 2007 Jan;14(1):1-7.) Slide 21: Fig 9: Worth 4-dot fusional testing (Taken from: http://foresighteyes.com/productdepth.html) Slide 22: Fig 10: Stereoscopic testing (Taken from: http://www.starophthalmic.com/store/shop/index.php?cPath=80_157) Slide 23: Fig 11: Diplopia testing with prisms for non-organic visual loss (Taken from: Chen CS, Lee AW, Karagiannis A, Crompton JL, Selva D. Practical clinical approaches to functional visual loss. J Clin Neurosci. 2007 Jan;14(1):1-7.)