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Zone of functional blindness
umms.org
- The physiological blind spot refers to a zone of functional blindness all normally sighted people have in each eye, due to an absence of photoreceptors where the optic nerve passes through the surface of the retina.
pubmed.ncbi.nlm.nih.gov/26325131/
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Study with Quizlet and memorize flashcards containing terms like where is the blind spot located?, what does the brain do when one eye is used?, what is on the surface of the retina? and more.
- Blind spot Flashcards
Blind Spot The spot in the back of each eye where the optic...
- Blind spot Flashcards
The blind spot of the eye is caused by _______. a) absence of photoreceptors where the optic nerve leaves the eye. b) more rods than cones within the retina. c) an absence of cones in the foveae. d) the macula lutea interrupts the nerve pathway. Click the card to flip 👆.
Blind Spot The spot in the back of each eye where the optic nerve is joined to the retina. This small circular area does not contain rods or cones (specialized cells in the eye that respond to light) and cannot respond to light.
A blind spot, scotoma, is an obscuration of the visual field. A particular blind spot known as the physiological blind spot , "blind point", or punctum caecum in medical literature, is the place in the visual field that corresponds to the lack of light-detecting photoreceptor cells on the optic disc of the retina where the optic nerve passes ...
Your retina is made up of light-sensitive cells which send messages to your brain about what you see. Everyone has a spot in their retina where the optic nerve connects. In this area there are no light-sensitive cells so this part of your retina can’t see. We call this the blind spot.
Blind spot, small portion of the visual field of each eye that corresponds to the position of the optic disk (also known as the optic nerve head) within the retina. There are no photoreceptors (i.e., rods and cones) in the optic disk, and, therefore, there is no image detection in this area.
This creates a “blind spot” in the retina, and a corresponding blind spot in our visual field. Figure 15.5.3 – Structure of the Eye: The sphere of the eye can be divided into anterior and posterior chambers. The wall of the eye is composed of three layers: the fibrous tunic, vascular tunic, and neural tunic.
