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Front view of human eye with dilated pupil
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Front view of human eye with dilated pupil
Dilated pupil. Close-up of a human eye with a dilated pupil. See P420/326 for the same eye without dilation. Dilation of the pupil (mydriasis) is a normal response to dim lighting. The enlarged aperture allows more light into the eye, improving sensitivity but reducing depth of focus. It also occurs in response to release of adrenalin in the body (the " fight fright flight" response), sexual arousal or the use of stimulant drugs such as amphetamine. Abnormal dilation of one or both pupils sometimes results from injury to the eye or damage to the optic nerve
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6448865
© ADAM HART-DAVIS/SCIENCE PHOTO LIBRARY
Dilated Eyes Pupil Sight Vision Visual Sense
EDITORS COMMENTS
This print showcases a front view of the human eye with a dilated pupil, offering an intimate glimpse into the intricate world of our visual sense. The dilated pupil, which is enlarged in response to various stimuli, serves as both a fascinating biological phenomenon and a testament to our body's adaptability. In dim lighting conditions, this natural dilation occurs as the eye strives to allow more light in, enhancing its sensitivity but compromising depth of focus. Additionally, adrenaline release during moments of fight or flight responses triggers pupil enlargement. Similarly, sexual arousal and certain stimulant drugs like amphetamine can induce this striking effect. While mydriasis is typically considered normal under these circumstances, abnormal dilation may arise from eye injuries or damage to the optic nerve. This reminder highlights the delicate nature of our vision and underscores the importance of protecting it. The meticulous detail captured in this close-up shot invites viewers to marvel at the complexity and beauty inherent within our eyes. It serves as a powerful reminder that sight is not merely functional but also an awe-inspiring aspect of human anatomy. With this stunning image by Science Photo Library gracing your space, you are sure to ignite conversations about health, vision care, and the wonders held within our own bodies.
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