What Is The Blind Spot Of The Retina
In this tiny area where the optic nerve passes through the surface of the retina there are no photoreceptors.
What is the blind spot of the retina. At the back of your eye is the retina. In this area there are no light sensitive cells so this part of your retina can t see. Because there are no cells to detect light on the optic disc the corresponding part of the field of vision is.
The blind spot of the retina also known as scotoma occurs where there is an absence of light detecting nerve cells on the retina. There are no photoreceptors i e rods or cones in the optic disk and therefore there is no image detection in this area. A blind spot scotoma is an obscuration of the visual field.
Answered on apr 11 2015 2 doctors agree. A degenerative hereditary condition of the retina known as retinitis pigmentosa which is characterized also by night blindness changes of the pigment within the retina and even eventual loss of the eye vision. Your retina is made up of light sensitive cells which send messages to your brain about what you see.
The brain fills in this missing circular area of perception so you usually don t notice the blind spot in your everyday vision. We call this the blind spot. The physiologic normal blind spot is from the area of the retina that is occupied by the optic nerve.
Why you have a blind spot your retina which is a thin layer of neural tissue at the back of your eye is made up of tiny light detecting cells called photoreceptors. Because of this there is a tiny gap in your visual field. While your brain usually fills in the missing information so that you don t notice it this quick and easy test makes it possible to demonstrate 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. As you have learned the blind spot is an area on your retina that has no visual receptors. Everyone has a spot in their retina where the optic nerve connects.
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 through the optic disc. A blind spot is actually a small area within your visual field that contains no detected vision. A blind spot or scotoma is an area on the retina without receptors to respond to light.
Blockages of the retinal veins or optic nerve.
