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A Look Behind Sleeping Eyes

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Have you ever wondered what your eyes do when you finally close them after a long day of visual processing and stimulation? Let's take a closer look at what happens behind your closed lids when your head hits the pillow.

Firstly, once your eyes are closed, they do continue to function in a limited fashion with the ability to sense light. This explains why a bright light being switched on or the sun rising in the morning can wake you up, while lying in a dark room will help you sleep.

During sleep your eyes don't send visual data or information about images to your brain. In fact, it takes almost 30 seconds for the connection between your eyes and your brain to reboot when you wake up. This is why it's often difficult to see complete and clear images when you first wake up.

Our bodies pass through five phases of sleep known as stages 1, 2, 3, 4, (which together are called Non-REM) and REM (rapid eye movement) sleep. During a typical sleep cycle, you progress from stage 1 to 4 then REM and then start over.  Almost 50 percent of our total sleep time is spent in stage 2 sleep, while 20 percent is spent in REM sleep, and the remaining 30 percent in the other stages. During stage 1, your eyes roll slowly, opening and closing slightly; however the eyes are then still from stages 2-4 when sleep is deeper.

During REM sleep, your eyes move around rapidly in a range of directions, but don’t send any visual information to your brain. Scientists have discovered that during REM sleep the visual cortex of the brain, which is responsible for processing visual data, is active. However, this activity serves part of a memory forming or reinforcing function which aims to consolidate your memory with experiences from the day, as opposed to processing visual information that you see. This is also the time when most people dream.

As for your eyelids, they cover your eyes and function as a shield protecting them from light. They also help preserve moisture on the cornea and prevent your eyes from drying out while your body is resting.

In short, while your eyes do move around during sleep, they are not actively processing visual imagery. Closing your eyelids and sleeping essentially gives your eyes a break. Shut-eye helps recharge your eyes, preparing them to help you see the next day. 


Greetings again from your TSO Family!

We are excited to say that TSO Capital Plaza is now open for routine eye care! Patients can be seen by appointment only, Monday thru Friday from 9:00AM-5:00PM. Our Saturday schedule will resume within the next few weeks. Please call (512) 452-5735 to schedule your appointment with us. We look forward to seeing you again!

With that being said, we will continue to take every precaution to ensure the safety of our patients, our staff, and our community. You should continue to expect limited entry into the office and very limited volume inside our office in order to maintain social distancing. Additionally, COVID screenings at the door will continue to take place, and safety and rigorous cleaning protocol will be in place. All staff will continue to wear masks (in addition to gloves and goggles as needed) and we ask that all patients come in for their examinations, adjustments, and glasses and contact lens dispenses wearing a mask or face covering as well. Further guidance will be given upon making your appointments.

For specific questions, please email Dr. Opal Amin at oamin@tsocap.com.

We thank you for your patience and cooperation with our team during this time. We will continue to monitor the situation and provide updates. We are grateful for our patients, and we thank you for supporting our small business during this time. We hope you are staying safe.

Take care,

Your local family at TSO Capital Plaza and Drs. Amin, Clark, Nguyen and Weeden