The blind spot is a region on the retina where ganglion cells connect with the optic nerve, there are no receptors in this area so nothing can be translated into vision. Making it more difficult for the lens to change its shape for vision at close range.

Having a blind spot in each eye is a natural occurrence and is typically not cause for concern. It occurs because of the structure of the eye and a lack of photoreceptors. You’re likely not even aware of your blind spot in day-to-day living, because your brain fills in any missing information.

You may not realize it, but both your eyes have a natural blind spot, or scotoma. Everyone has them. They’re normal and you probably don’t notice them.

– During near accommodation, the lens equator moves outward causing an increase in lens diameter. – The equatorial lens diameter increases with age due to natural growth of the lens. There is continued deposition of the lens fibers within the lens as it ages, causing the lens to become compact and stiff.

Rods detect dimness and brightness; cones detect color and are clustered around the fovea. Visual acuity such as sharpness and detail is greatest at the fovea, while at the blind spot it is insensitive to visual stimulation, it’s the part of the retina that converges to the optic nerve.

Fovea centralis

The resolution or sharpness in vision is because of the high concentration of cone cells in the fovea. The fovea has the densest concentration of photoreceptor cells that are known as cones. Rods are completely absent from the fovea.

The pupil is a black hole located in the center of the iris of the eye that allows light to strike the retina.

When your eyes water, they’re making tears, just like when you cry. The tears from watering help protect your eyes. How? By keeping them moist and washing out dust and other foreign stuff that gets in there.

The cells, called retinal pigment epithelial, or RPE cells, are nearly black, and form a layer that recharges the photoreceptor cells of the eye after they are exposed to light, Williams explains. The photoreceptors contain molecules called photopigments.

The images we see are made up of light reflected from the objects we look at. Because the front part of the eye is curved, it bends the light, creating an upside down image on the retina. The brain eventually turns the image the right way up.

photoreceptor layer

Brown