The COVID-19 pandemic caused many new terms and effects to enter our lives in terms of global health. During this process, it emerged that the COVID-19 infection was not limited to the respiratory tract but also had various negative effects on eye health and brain functions. It was observed that the infection caused by the SARS-CoV-2 virus showed symptoms such as irritation, watering, redness, and photophobia on the eye surface, especially conjunctivitis. Furthermore, new concepts like “brain fog,” which expresses the negative effects of viral infections on the brain, were introduced during this period.

In addition to the negative effects created by the virus on the eye surface and optic nerves, the importance of the concept of neuroplasticity became more pronounced. Neuroplasticity is the brain’s capacity to create new neural pathways in damaged areas and reorganize the functions of existing cells. This situation is of great importance in compensating for vision problems and reductions in cognitive abilities that arise in the post-COVID-19 period.

Vision rehabilitation emerged as a critical supportive treatment in cases of vision loss or reduced visual functions caused by the virus. Vision rehabilitation methods include personalized visual exercises, neuro-optometric rehabilitation, and innovative applications such as tele-rehabilitation. Thus, patients can regain their visual abilities, overcome brain fog, and enhance their general quality of life. Comprehensive and multifaceted patient care, supported by the principles of vision rehabilitation and neuroplasticity, plays a critical role in the post-COVID-19 period of viral diseases.

What Were the Ocular Symptoms of COVID-19?

COVID-19 is a virus associated with various symptoms related to eye health. Early recognition of these symptoms is vital for rapid diagnosis and correct treatment. The ocular symptoms of COVID-19 include conjunctivitis (pink eye), eye redness, burning, irritation, watering, photophobia (light sensitivity), ocular pain (eye pain), itching, and excessive tearing. Conjunctivitis, in particular, is the most frequently observed ocular symptom of COVID-19 infection, found in approximately 6% of patients. Furthermore, the rate of these symptoms can increase depending on the severity of the disease. COVID-19-related ocular symptoms can complicate daily life and reduce the quality of life. Therefore, being aware of eye health symptoms during the pandemic and consulting a specialist ophthalmologist when necessary is important.

• Conjunctivitis: Conjunctivitis is the most frequently reported eye problem in COVID-19 patients. It presents with eye redness, watering, burning, and irritation. It is seen in approximately 6% of COVID-19 cases, and the frequency can increase, especially in severe cases.
• Photophobia (Light Sensitivity): Photophobia manifests as patients developing abnormal sensitivity to light and can cause difficulties in daily life activities. Patients who struggle to look at bright light sources may, therefore, have difficulty performing their daily tasks.
• Ocular Pain (Eye Pain): Another frequently encountered symptom in individuals who have had COVID-19 infection is pain or discomfort in the eyes. This is considered a result of the general inflammation that occurs during the infection process.
• Itching and Excessive Tearing: Itching and excessive tearing are mild symptoms of COVID-19 and often resemble allergic reactions. Although generally not a serious condition, it can be bothersome and affect patients’ quality of life.

Although these symptoms are generally mild, being aware of and creating awareness about eye health is of great importance during the pandemic process. It is recommended to consult an eye specialist in case of any change in eye health.

“You Might Be Interested: Get Detailed Information About the Relationship Between the Eyes and the Brain.”

“The eyes are a tool the brain uses to collect and process visual information. Our eyes collect light and images and transmit them to the visual cells on the retina. These cells reach the brain via nerve fibers, and the brain interprets this information to form visual perception.”

Post-COVID-19 Visual Problems and Brain Fog

The condition called “brain fog” has emerged in many patients who have had COVID-19. Brain fog manifests as noticeable reductions in cognitive functions such as forgetfulness, difficulty concentrating, mental cloudiness, and weakened decision-making abilities. These cognitive problems are directly related to the effect of COVID-19 on the neurological system. Since the visual system is a critical system that affects approximately 70-80% of the brain, deterioration in visual functions is also frequently observed in patients experiencing brain fog.

Brain fog and visual problems are thought to have a neurological basis. Thanks to the neuroplasticity mechanism in the brain, a portion of the losses in cognitive functions and the visual system can be recovered. Neuroplasticity refers to the brain’s ability to create new connections between other nerve cells to regain lost functions. It is actively used in rehabilitation programs, especially in the period following viral infections.

The Relationship of Brain Fog with the Visual System

In patients experiencing brain fog, vision exercises and vision rehabilitation techniques help in the recovery of cognitive functions. Scientific studies have shown that visual exercises increase cognitive abilities and reduce the symptoms of brain fog. Visual exercises support neurological activity by strengthening eye muscles and improving visual processing. With these methods, healthy and effective connections are established between the visual system and the brain, raising the patients’ general quality of life and increasing their level of independence in daily life activities.

Neuroplasticity and Vision Rehabilitation

In addition to the negative effects created by the virus on the eye surface and optic nerves, the importance of the concept of neuroplasticity became more prominent. Neuroplasticity is the brain’s capacity to create new neural pathways in damaged areas and reorganize the functions of existing cells. This situation is of great importance in compensating for vision problems and reductions in cognitive abilities that arise in the post-COVID-19 period.

Vision rehabilitation emerged as a critical supportive treatment in cases of vision loss or reduced visual functions caused by the virus. These rehabilitation methods include personalized visual exercises, neuro-optometric rehabilitation, and innovative applications such as tele-rehabilitation. Thus, patients can regain their visual abilities, overcome brain fog, and enhance their general quality of life. Comprehensive and multifaceted patient care, supported by the principles of vision rehabilitation and neuroplasticity, plays a critical role in the post-COVID-19 period of viral diseases.

• Visual Field Losses: Patients may experience vision loss in specific areas and face difficulties in their daily lives.
• Visual-Spatial Perception Disorders: Patients who have difficulty perceiving spatial relationships may experience a loss of performance in daily activities.
• Balance Problems: Balance disorders may occur due to altered visual perception; this condition can be improved with rehabilitation.

Personalized vision rehabilitation plays an important role in treating these symptoms. Neuro-optometric rehabilitation programs aim to improve visual functions using visual exercises and tele-rehabilitation methods. Vision exercises provide a marked benefit, especially in reducing brain fog and recovering cognitive functions. Exercises to Strengthen Visual Coordination: These exercises are designed to increase independence in daily tasks and strengthen eye muscles.

“You Might Be Interested: Get Detailed Information About Vision Rehabilitation.”

“For Your Questions About Vision Rehabilitation, Contact Dr. Semrin Timlioğlu Immediately and Schedule an Appointment for an Eye Examination.”

Assistive Technologies: Tools such as magnifiers and screen readers ease the daily lives of patients experiencing vision impairment.

Furthermore, studies conducted on Alzheimer’s patients have shown that vision rehabilitation preserves cognitive abilities. These methods have been observed to be effective in the post-COVID-19 period as well, with significant improvements in visual abilities and quality of life achieved through the active use of neuroplasticity.

Being aware of the effects of COVID-19 and similar viral diseases on the eyes and applying vision rehabilitation, leveraging the principles of neuroplasticity, can improve patients’ general health and quality of life. It is recommended that you consult an ophthalmologist without delay when symptoms are noticed to protect your eye health.