The physiology of the visual system explains how the eye, The
optic nerve and the brain work together to convert light into
nerve signals that allow humans to perceive images and
interpret the visual world.
Visual physiology explains how the eye captures light and
converts it into nerve signals processed by the brain. This
process includes focusing light on the retina, transmitting
signals through the optic nerve and perceiving color, contrast
and brightness.
The optic nerve carries visual signals from the retina to
the brain. These electrical impulses are processed in the
visual cortex, allowing the brain to interpret light, color,
and shapes as visual images.
Lens replacement: This shows the final result of cataract surgery, in
which the opaque lens has been replaced with an artificial intraocular
lens. This new lens allows light to focus properly on the retina, restoring
clear vision and improving the patient’s quality of life.
The retina and macula contain photoreceptor cells that
detect light and enable vision. The macula and its central
region, the fovea, provide detailed central vision and
accurate color perception.
Retinal detachment is explained clearly. The retina separates
from its normal position, affecting vision and causing symptoms
such as flashes of light, floaters, and loss of peripheral vision.
Amblyopia is described as a condition in which one eye does
not develop properly during childhood, also known as “lazy eye.”
This leads to reduced vision even with optical correction.
Vision with amblyopia, a conditionin which oneeyedoesnot
developcorrectlyduringchildhood, causinga decreasein vision evenwith opticalcorrection. Strabismusordifferencesin the graduationbetweenbotheyescan contributeto thiscondition.
The vision in amblyopia, alsocalled“lazyeye“, showsa
conditionin which oneof the eyesdoesnot developproperly inchildhood, resultingindecreasedvisionevenwith optical correction.