Dry Eye and Taste Loss Are Common After Vestibular Schwannoma Surgery
Original title: Long-Term Nervus Intermedius Dysfunction After Retrosigmoid Vestibular Schwannoma Resection: Incidence, Independent Predictors, and Development of a Nomogram.
How far along is this research?
- Lab cells
- Animals
- Review
- Tested in people
This was tested in people. That is the most reliable kind of research we share.
This was a look back at past patient records, not a new treatment.
The short version
About half of people had lasting dry eye or taste changes after this brain tumor surgery.
What was studied. Doctors looked back at the records of 262 patients. All had a vestibular schwannoma removed through an approach behind the ear. The team checked for long term problems with a small nerve called the nervus intermedius.
What they found. Long term problems with this nerve showed up in 129 patients, or 49.2%. Dry eye was the most common. It affected 115 patients, or 43.9%. A weaker sense of taste affected 45 patients, or 17.2%. Both problems together affected 31 patients, or 11.8%. Bigger tumors, weaker facial nerve function, longer surgery, and less feeling in the face went with higher risk. The team built a scoring tool to spot patients at high risk soon after surgery.
What this means, and what it doesn't
What it could mean: If you are having this surgery, dry eye and taste changes are worth asking about. They are common, and they can last. A score like this could help your team flag you early. Then they can watch your tear function and send you to an eye doctor sooner.
What it doesn't mean: This is not a treatment and not a cure. Nothing here makes the surgery safer or fixes a nerve that is already hurt. The team looked back at old records, so it shows what happened, not what causes what. The scoring tool was only checked against the same group of patients. It has not been proven in new patients. Your own risk depends on your tumor and your surgery, so talk with your care team.
Source: PubMed, August 19, 2026 · Read the original
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