---
title: What is Schirmer test?
description: "The Schirmer test is a simple measurement of tear production using small strips of filter paper placed inside the lower eyelid. It helps assess aqueous tear deficiency. ## Procedure After gently inserting the strips at the outer lower lid margin,…"
url: "https://bluefinvision.com/knowledge-base/topics/diagnostics-testing/what-is-schirmer-test/"
updated: "2025-12-12"
category: "Diagnostics & Testing"
---

# What is Schirmer test?

The Schirmer test is a simple measurement of tear production using small strips of filter paper placed inside the lower eyelid. It helps assess aqueous tear deficiency.

## Procedure

After gently inserting the strips at the outer lower lid margin, the eyes are closed for a set time, typically five minutes. The length of paper wetted by tears is then measured in millimetres.

- May be performed with or without topical anaesthetic, depending on protocol
- Low wetting values suggest reduced tear secretion
- Reflex tearing or discomfort can affect results
- Both eyes are usually tested simultaneously

## Clinical Use

The Schirmer test is commonly used in diagnosing Sjögren's syndrome and other causes of aqueous-deficient dry eye. It is interpreted alongside symptoms and other tear film assessments.

- Helps distinguish aqueous deficiency from primarily evaporative dry eye
- Serial tests may monitor changes after treatment
- Variability between tests means results are considered in context
- Often combined with ocular surface staining and tear break-up time