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How does the iris respond to light?

In bright light, the iris contracts to shrink the pupil, protecting the sensitive retina inside your eye, which sends visual signals to the brain. In the dark, the iris opens to let in more light so you can see.

How do the eyes receive process and transform light signals how do we see color?

The iris (the colored part of the eye) controls how much light the pupil lets in. Next, light passes through the lens (a clear inner part of the eye). These electrical signals travel from the retina through the optic nerve to the brain. Then the brain turns the signals into the images you see.

Can head trauma cause eye problems?

The most common vision problems related to head injuries include blurred vision, double vision and decreased peripheral vision. Patients can also experience a complete loss of sight in one or both eyes depending on the severity of the injury.

How are the brain and eyes connected?

The optic nerve, a cable–like grouping of nerve fibers, connects and transmits visual information from the eye to the brain.

What part of the brain affects the eyes?

The occipital lobe is the back part of the brain that is involved with vision.

Can neurological problems cause vision problems?

Nerve problems can affect the nerves of the muscles surrounding the eyeball and those that control the dilation and contraction of the pupil. Such problems can result in symptoms such as double vision, nystagmus, oscillopsia and disorders of the pupils, such as anisocoria.

How do you cure loss of balance?

Your treatment may include:

  1. Balance retraining exercises (vestibular rehabilitation). Therapists trained in balance problems design a customized program of balance retraining and exercises.
  2. Positioning procedures.
  3. Diet and lifestyle changes.
  4. Medications.
  5. Surgery.

What is losing balance a symptom of?

Loss of balance or unsteadiness Losing your balance while walking, or feeling imbalanced, can result from: Vestibular problems. Abnormalities in your inner ear can cause a sensation of a floating or heavy head and unsteadiness in the dark. Nerve damage to your legs (peripheral neuropathy).

How can I improve my balance as I age?

How to Maintain and Improve Your Balance as You Age

  1. One-foot balance. When was the last time you stood on one foot for more than two seconds?
  2. Sit and stand. Besides helping with balance, this acts as a leg strengthener as well.
  3. Walk the balance beam. Walk heel to toe across the floor like you are walking along a balance beam.
  4. Lunges.
  5. Learn Tai Chi.
  6. Yoga.
  7. Mini trampoline.