Diagnosing Dry Eye
Dry eye can have a variety of causes, which is why we first determine the root cause of your dry eyes before beginning treatment. We use a variety of diagnostic tools that quantitatively measure your dry eye. Along with an assessment of your history and symptoms, this allows us to offer you the right treatment.
We use the I-Pen to measure tear osmolarity. The I-Pen is a handheld device about the size of a thermometer. Using the I-Pen, we gently touch the device to your inner, lower eyelid and hold it there for between two to four seconds. During this time, the device takes one hundred and ninety-two different readings to measure osmolarity (the concentration of your tears).
The osmolarity, as well as the difference in osmolarity between your two eyes, is an important indicator of dry eye. The device also measures your lipid layer, the component of your tears that prevents them from evaporating too quickly.
Meibography is used to identify meibomian gland dysfunction, a disorder that affects 86% of people with dry eye. Meibomian gland dysfunction affects the meibomian glands, causing gland shortening and gland loss. Meibography is a technique we use to photograph the meibomian glands and detect meibomian gland dysfunction.