Dry Eye Evaluation

What is Dry Eye Evaluation?

A dry eye evaluation involves a comprehensive assessment of tear production, quality, and evaporation, as well as an examination of the ocular surface and eyelid structures. Tests may include measuring tear volume with Schirmer’s test or phenol red thread test, assessing tear film stability with tear breakup time (TBUT), and evaluating for corneal damage with fluorescein staining. Additionally, questionnaires and slit-lamp examinations are used to assess symptoms and identify any underlying conditions contributing to dry eye.

What is the test used for?

Dry eye evaluation is essential to identify the root cause of dry eye symptoms, assess the severity of the condition, and determine the most effective treatment plan. Accurate diagnosis helps manage symptoms, prevent potential complications, and improve a patient’s quality of life.

How is the test done?

Medical History and Symptom Assessment:

A comprehensive eye exam: A detailed discussion about your overall health and eye health to identify potential contributing factors to dry eye.

Analysing symptoms such as dryness, burning, or vision problems. This includes understanding the frequency and severity of symptoms and their impact on your daily life.

Physical Examination:

Eyelid and Blink Assessment:

Your doctor will examine your eyelids for proper closure, blink patterns, and any signs of inflammation or abnormalities like meibomian gland dysfunction.

Tear Film Evaluation:

Tear Break-Up Time (TBUT): This test measures how long it takes for the tear film to break up after a blink, indicating tear film stability.
Fluorescein Staining: A dye is applied to the eye to assess the corneal surface for damage or irregularities.
Tear Meniscus Assessment: The height of the tear meniscus (the tear fluid along the lower eyelid margin) is evaluated to assess tear volume.

Tear Production Measurement:

Tear Osmolarity Test:

This test measures the concentration of particles in your tears, with higher osmolarity often indicating dry eye.

Meibomian Gland Evaluation:

Your doctor may examine the meibomian glands (located in the eyelids) for signs of blockage or inflammation.

Meibography:

Specialized imaging techniques like meibography can be used to assess the structure and health of the meibomian glands.

How Long Does the Evaluation Take?

The B-Scan typically takes around 30 – 40 mins to complete.

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