How to Do Schirmer Tear Test Dog: A Comprehensive Guide
The Schirmer tear test is a common diagnostic tool used to assess the function of the lacrimal glands and the overall health of the eyes. This test is particularly important for dogs, as it helps veterinarians determine if a dog is suffering from dry eye or other eye-related issues. In this article, we will provide a comprehensive guide on how to perform the Schirmer tear test on a dog, including the necessary materials, step-by-step instructions, and tips for obtaining accurate results.
Materials Needed
Before performing the Schirmer tear test on a dog, you will need the following materials:
– Schirmer tear strips (available at most veterinary clinics or pharmacies)
– Sterile saline solution
– Sterile gloves
– A magnifying lens or a hand-held microscope
– A ruler or a caliper to measure the length of the tear film
Preparation
Ensure that you have a clean and well-lit area for the test. It is also essential to have a calm and cooperative dog. Before starting the test, make sure to wash your hands thoroughly and put on sterile gloves.
Step-by-Step Instructions
1. Position the dog on its side with its head slightly elevated to facilitate tear flow.
2. Use the magnifying lens or hand-held microscope to examine the eyes for any signs of inflammation or abnormalities.
3. Gently hold the dog’s eyelids open using a hemostat or your fingers.
4. Take a Schirmer tear strip and fold it in half, crease side out. This creates a small reservoir at the tip of the strip.
5. Place the folded end of the tear strip into the conjunctival sac of the lower eyelid, ensuring that the reservoir is positioned against the cornea.
6. Hold the strip in place with one hand, while using the other hand to gently hold the eyelids open.
7. After 60 seconds, carefully remove the tear strip from the eye.
8. Place the strip on a flat surface and use the ruler or caliper to measure the length of the tear film. The tear film should extend from the reservoir to the tip of the strip.
Interpreting Results
The Schirmer tear test is considered normal if the tear film extends between 15 and 20 millimeters. If the tear film is shorter than 15 millimeters, it may indicate a tear film deficiency, which could be due to various factors, such as dry eye, conjunctivitis, or other eye conditions.
Conclusion
Performing the Schirmer tear test on a dog is a simple yet effective way to assess the health of your pet’s eyes. By following the steps outlined in this guide, you can help your veterinarian diagnose and treat any eye-related issues your dog may be experiencing. Remember that accurate results depend on proper technique and attention to detail, so take your time and be patient with your furry friend during the test.
