The human eye has a point that lacks photoreceptor cells. This is identified as :

The correct answer is Blind spot.

Key Points

• The blind spot in the human eye is the area on the retina where the optic nerve exits the eye, also known as the optic disc.
• This region lacks photoreceptor cells (rods and cones), making it insensitive to light.
• The blind spot is located slightly nasal to the fovea in the visual field of each eye.
• Despite the presence of a blind spot, the brain compensates for it by using information from the other eye or by filling in the missing details, making it unnoticeable under normal circumstances.
• The phenomenon of the blind spot was first discovered by the French scientist Edme Mariotte in the 17th century.

Additional Information

• Fovea
  • The fovea is a small depression in the retina that contains a high concentration of cones.
  • It is responsible for sharp central vision, enabling activities like reading and driving.
• Photoreceptor Cells
  • There are two types of photoreceptor cells in the retina: rods and cones.
  • Rods are sensitive to low light and help in night vision, while cones are responsible for color vision and work better in bright light.
• Optic Nerve
  • The optic nerve transmits visual information from the retina to the brain.
  • It is composed of over a million nerve fibers and plays a crucial role in the visual system.
• Visual Field
  • The visual field is the total area visible to an eye when it is focused on a central point.
  • Each eye has its own blind spot, and their positioning prevents overlap in binocular vision.