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Eyeshine
Animals have a membrane in their eyes called tapetum lucidum. It reflects light at night allowing them better night vision, and also making their eyes shine in the dark.
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Red-eye effect
Humans don't have the tapetum lucidum, but their eyes also reflect some amount of light, mostly red (and infrared), although it needs special equipment to be seen, like an ophthalmoscope or a camera when you use a flash (red-eye effect).
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Leukocoria
When, instead of the red reflex, the pupil appears white (a condition called leukocoria), this could indicate an eye problem like retinoblastoma.
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Tourette syndrome
Lab Rats In Lab Coats
Tourette syndrome
*It contains swearing, a lot of it*
According to the general surgeon, appendicitis patients usually vomit only once.
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Alvarado score
There's also:
• Rovsing's sign
• Obturator sign
• Psoas sign
• Rovsing's sign
• Obturator sign
• Psoas sign
Lab Rats In Lab Coats
https://youtu.be/DdPRfPm9SI4?si=EgUom2AwIwFhln4Q
It's a great video, you should watch it