Understanding Dry Eyes

Dry Eye Syndrome (also known as dry eye disease) and ocular surface disease are umbrella terms describing conditions where the eye’s surface does not have adequate lubrication, often leading to discomfort, visual disturbances, and potential damage to the ocular surface. Meibomian gland dysfunction (MGD) is one of the most common and important causes of dry eye, specifically the evaporative type. The meibomian glands, located in the eyelids, secrete lipids (oils) that form the outermost layer of the tear film, preventing rapid evaporation of the underlying watery (aqueous) layer. When these glands become blocked or their secretions change in quality or quantity (MGD), the lipid layer is compromised, leading to increased tear evaporation, tear film instability, and ultimately the symptoms and signs of dry eye. This process can trigger inflammation and further damage to the ocular surface, which is why MGD is considered a major underlying mechanism within dry eye syndrome/disease, which itself is a subset of ocular surface disease; all these conditions are closely interrelated through their impact on tear film stability and ocular surface health.

Dr. Sharpe has written extensively about dry eye syndrome as it relates to vision correction surgery. Check out the articles below to learn more:

EVO ICL

If you are considering vision correction surgery and have dry eye syndrome, you are in luck! The EVO ICL (Implantable Collamer Lens) is particularly beneficial for individuals with dry eye syndrome because, unlike laser vision correction procedures such as LASIK, PRK, or SMILE, it does not require the removal or reshaping of corneal tissue. This is crucial since procedures that alter the cornea can damage corneal nerves, which play a key role in stimulating tear production; such nerve disruption often leads to or worsens dry eye symptoms. By preserving the cornea and its nerves, the EVO ICL procedure maintains the eye’s natural tear production and does not induce or aggravate dry eye. Additionally, the minimally invasive nature of the EVO ICL allows for a more comfortable recovery and reduces the risk of complications related to dry eye, making it a preferred vision correction option for those who already suffer from or are prone to dry eye syndrome. The lens is also made from a biocompatible material that integrates seamlessly with the eye, further minimizing irritation and promoting comfort for dry eye patients.