Yes, Amyotrophic Lateral Sclerosis (ALS) can affect the eyes. ALS is a progressive neurodegenerative disorder that affects the motor neurons in the brain and spinal cord, leading to the deterioration of voluntary muscle control and eventual paralysis. While not all cases of ALS affect the eyes, many cases do.
The most common symptom of ALS affecting the eyes is ptosis, or drooping eyelids. This occurs when the muscles that control the eyelids become weak due to the degeneration of the motor neurons in the brain that control them. This can lead to vision problems, such as blurriness or double vision, as the eyelids are not able to close completely.
In some cases, ALS can also cause nystagmus, or involuntary eye movements. This occurs when the muscles that control the eyes become weak and the eyes start to move rapidly and uncontrollably. Nystagmus can lead to difficulty with focusing and may cause dizziness or nausea.
In addition, ALS can lead to vision loss due to damage to the optic nerve. This occurs when the motor neurons that control the muscles in the eye become weak, leading to the inability to move the eye properly. This can lead to difficulty focusing, blurred vision, and even blindness.
Finally, ALS can cause the pupil to become dilated, leading to light sensitivity. This occurs when the muscles that control the pupil become weak and the pupil fails to constrict in response to light. This can cause discomfort and can lead to difficulty seeing in bright light.
Overall, ALS can affect the eyes in a variety of ways, including ptosis, nystagmus, vision loss, and light sensitivity. It is important to consult with your doctor if you are experiencing any of these symptoms to ensure proper diagnosis and treatment.