Ocrevus Side Effects: Dry Eye and Vision Changes

Ocrevus’s most common side effects include infusion reactions and respiratory infections. Dry eye is not listed as a common adverse reaction in its U.S. prescribing information, revised May 2026. New eye symptoms should not automatically be dismissed as dryness, however. FDA prescribing information

Ocrevus (ocrelizumab) treats multiple sclerosis (MS), not dry eye. This article focuses on intravenous Ocrevus; see our separate Ocrevus Zunovo guidance if that is the product you receive.

Eye symptoms that need urgent attention

Seek emergency care for sudden vision changes or vision loss, severe eye pain, or eye pain accompanied by increased light sensitivity. Do not wait to see whether lubricating drops help. Mayo Clinic vision guidance; eye-pain guidance

For other new eye pain, light sensitivity, redness, blurred vision, or discharge, contact your eye-care professional and MS team right away for same-day advice or assessment. Tell them that you receive Ocrevus. AAO guidance; Ocrevus medication guide

Two Ocrevus warnings are particularly relevant:

• Serious herpes infection: infections inside the eye have been reported after approval. The medication guide lists changes in vision, eye redness, and eye pain among possible warning signs.
• Progressive multifocal leukoencephalopathy (PML): this rare, serious viral brain infection can cause worsening eyesight, weakness, balance problems, or changes in thinking over days to weeks. Contact your MS team immediately for new or worsening neurological symptoms. Do not wait for the next infusion appointment. Ocrevus prescribing information and medication guide

These warnings do not mean that every irritated eye signals a serious infection. They mean that lubricating drops cannot safely answer the question on their own.

Common Ocrevus side effects

In the adult clinical trials described in the label:

• Infusion reactions occurred in 34–40% of Ocrevus-treated participants. Symptoms can include itching, rash, throat irritation, headache, tiredness, dizziness, nausea, fever, and breathing difficulties. Reactions were more common with the first infusion and can occur up to 24 hours afterward.
• Upper respiratory infections were the most common infections. Lower respiratory infections, skin infections, and herpes-related infections also occurred. Respiratory infections were predominantly mild to moderate, although serious infections have been reported. Prescribing information, sections 5.1–5.2 and 6.1

Those percentages describe adult trial participants—not the chance of a reaction at each infusion. Children have separate trial data.

The infusion team gives a corticosteroid and an antihistamine beforehand to reduce reactions and observes patients for at least one hour afterward. Tell the nurse about any symptoms during the infusion; call the treatment team right away if reaction symptoms develop after leaving. FDA medication guide

Trouble breathing, sudden throat swelling, or collapse requires emergency help. Call your local emergency number if these happen after leaving the infusion center; they can signal a life-threatening allergic reaction. Emergency allergic-reaction guidance

Could dryness come from something else?

Not being listed as a common side effect does not prove Ocrevus cannot contribute to an individual’s symptoms. It does mean the label does not establish dry eye as a typical reaction.

One detail worth discussing is the antihistamine given before an infusion. Antihistamines can reduce tear production. That makes premedication a possible contributor to dryness—not proof of the cause in your case. Do not skip or change premedication without your infusion team’s advice. Other contributors include contact lenses, eyelid oil-gland problems, dry air, and prolonged screen use. Ocrevus premedication requirements; Mayo Clinic dry-eye guidance

MS itself can also cause eye problems. Optic neuritis, inflammation of the nerve carrying visual information to the brain, can cause reduced vision in one eye, pain with eye movement, and colors appearing less vivid. Those symptoms need assessment; they are not an ordinary dry-eye pattern. Mayo Clinic optic-neuritis guidance

What may help mild dryness

For mild scratchiness or burning without the warning signs above, artificial tears are a standard first option. Screen breaks and avoiding air blowing directly toward your eyes may also help. These measures relieve surface symptoms; they do not treat optic neuritis or an infection. National Eye Institute

Choose preservative-free tears if you use drops more than four times daily over a prolonged period. With contacts in, use only drops explicitly labeled for contact-lens wear. Avoid treating dryness with “redness relief” drops containing tetrahydrozoline or naphazoline. AAO drop-selection guidance

If symptoms persist or you regularly rely on drops, arrange an eye examination. Bring a list of medicines and note whether symptoms began before, during, or after an infusion. Our guide to choosing dry-eye drops explains the main options.

Other important risks to discuss with your MS team

Ocrevus can lower immunoglobulins—antibodies that help fight infection—and reactivate hepatitis B. Its label also warns about immune-related colon inflammation, liver injury, and a possible increased cancer risk, including breast cancer. Blood testing and standard breast-screening guidance are part of risk management. FDA prescribing information

Contact your treatment team right away for infection symptoms, new or persistent diarrhea, bloody or black stools, severe abdominal pain, dark urine, or yellowing of the skin or whites of the eyes. Yellow eyes can signal jaundice, not dry eye. Decisions about delaying or stopping Ocrevus belong with the prescribing team. FDA medication guide

This is general health information, not a diagnosis or a complete guide to Ocrevus’s risks. It does not replace care from your MS team or eye-care professional.