Eye Twitch and Multiple Sclerosis

What Is Eye Twitching?

Myokymia, or eye twitching, is an involuntary wave-like spasm in the muscles that perform voluntary bodily functions. Myokymia primarily affects the muscles of the face, particularly the orbicularis oculi muscle, which is located in the eyelid. When the eyelids are involved, it is known as eyelid myokymia. Eyelid myokymia is a transient, self-limiting, and rippling contraction of the orbicularis muscle responsible for eyelid closure. It is a benign condition that rarely extends for longer. It primarily affects the lower eyelid and presents unilaterally.

What Causes Eye Twitching?

Eye twitching can have many causes, such as:

• Caffeine (excess caffeine intake can cause involuntary spasms of the eyelid, referred to as caffeine eye twitch).

• Fatigue.

• Stress.

• Anxiety.

• Exercise.

• Dry eyes.

• Medications (particularly those taken for migraines).

• Not getting enough sleep.

• Irritation of the eye surface.

• Consuming nicotine or alcohol.

Additionally, eye twitching can also be caused by systemic diseases, including multiple sclerosis, autoimmune disorders, and brainstem pathologies.

What Are the Ocular Manifestations of Multiple Sclerosis?

Vision problems in MS are very common. The most common MS eye problems, or ocular manifestations of MS include:

• Optic neuritis (a condition in which the optic nerve becomes swollen and inflamed, leading to pain, blurred vision, and difficulty in distinguishing colors). Eye pain in MS is usually associated with this condition.

• Myoclonus (a sudden, uncontrollable muscle twitch or contraction).

• Vision impairment.

• Orbital pain.

• Diminished color vision and contrast sensitivity.

• Inflammation of the papillae.

• Eye twitching.

• Internuclear ophthalmoplegia (a disorder in which the ability to move the eye horizontally is lost).

• Loss of depth perception.

• Nystagmus (repetitive eye movements).

• Double vision.

• Opsoclonus (involuntary, rapid, and chaotic eye movement).

Other features of MS, apart from the ocular manifestations, include:

• Tingling sensation.

• Difficulty in speech and swallowing.

• Cognitive impairment.

• Muscle weakness.

• Headache.

• Loss of bladder and bowel function.

• Diminished sexual drive.

What Are the Specific Symptoms of Multiple Sclerosis That Cause Eye Twitching?

Eye twitching is, overall, a self-limiting and transient phenomenon. Eye twitch in MS shows the following features:

• Long-lasting eye twitching.

• Facial spasms or facial symptoms may be present, such as numbness, weakness, or tingling.

• Complete closure of the eye after a twitch.

• The twitch never gets better, even after the triggers are removed (like lifestyle changes or reducing caffeine intake).

• The twitching may spread to other parts, like the cheek or jawline.

What Is the Link Between Multiple Sclerosis and Visual Defects?

Multiple sclerosis is often associated with several visual impairments, including optic neuritis (inflammation of the optic nerve) and other ocular motor movements.

• Damage to the central nervous system affects the afferent and efferent pathways of the eye. Destroying the afferent pathway mainly results in loss of sensory function. The optic nerve is most frequently involved, thus leading to visual defects.

• When these pathways are affected, the motor supply to the muscles of the pupil and eyes is disrupted. This ultimately results in faulty ocular movements. Over 40 percent of MS cases have impaired ocular motor function.

What Conditions Can Also Present With Eye Twitching?

Diseases that also present with eye twitching are

• Hemifacial spasms: A condition that causes one side of the facial muscle to twitch.

• Meige syndrome: A rare neurological disorder causing forceful and involuntary contraction of the jaw muscles

• Spastic-paretic facial contracture: Facial weakness accompanied by well-sustained contraction of the face’s unilateral half.

Other than these, multiple sclerosis and Alzheimer's are two major neurodegenerative diseases that not only affect brain function but also have a significant impact on eye health. Therefore, eye twitching can also be seen in Alzheimer’s.

What Are the Treatment Options for Eye Twitching in MS?

The treatment options for managing eye twitching in MS usually depend on managing the underlying cause. While treating, severity should also be considered; mild cases usually do not require any treatment, but severe cases require medical intervention. Apart from this, regular monitoring is very important.

The treatment options include:

• Artificial tears or lubricating eye drops are considered in case of dry eyes.

• In severe cases, botulinum toxin injections (Botox) are considered to relax the eyelid muscles. These are injected near the affected eyelid, weakening the muscle and reducing spasms.

• Triggers like fatigue, stress, or caffeine or alcohol consumption should be identified and avoided. These should be managed with proper sleep, stress relaxation techniques, limiting caffeine, proper hydration, relaxing eyes, and avoiding prolonged screen time.

• Muscle relaxants like Tizanidine and Baclofen can be used to reduce spasms.

• In the case of nystagmus, anticonvulsant medications may be prescribed.

When Should You Seek Medical Advice for Eye Twitching in MS?

Eye twitching is a common presentation in MS patients, but you can always consult an ophthalmologist for the following cases:

• Continuous eye twitching for more than a few days.

• Incomplete closure of eyelids.

• Difficulty in eye-opening.

• Redness or swelling of the eyelids.

• Sudden vision loss.

• Numbness of eyelids.

• When eye twitching significantly impacts vision or is accompanied by eye drooping and discharge from the eye

• When eye twitching is associated with other MS symptoms like slurred speech, balance issues, or fatigue.

• When twitching spreads to other parts of the face.

What Is the Prognosis of Eye Twitching in MS?

The prognosis of eye twitching is usually good because these symptoms last for a few weeks and improve independently. But if they cause trouble, it is always better to inform the doctor and take the necessary steps.

Conclusion:

Eye symptoms of MS cause issues, but mostly, they are temporary. Though eye twitching can occur for many reasons, if it is persistent and causes eye issues, it is essential to consult a specialist to diagnose the underlying cause. Early detection can slow down the progression of the disease, which can help improve the quality of life.

Key Takeaways From iCliniq:

• Eye twitching, rarely, can be a sign of a sickness called multiple sclerosis. People with MS might also feel numbness, muscle weakness, or get tired easily.

• To help with eye twitching in people with MS, doctors look at addressing lifestyle factors and medications.

MS is a serious illness, and it can be even harder when it affects the eyes. If you need special care, you can talk to our iCliniq ophthalmologist for a plan that’s just for you.