Meibomian Gland Dysfunction in the Context of oGVHD

The meibomian glands are small glands in the eyelids, but their role in ocular surface health is significant. They secrete lipids that help stabilize the tear film and reduce evaporation.

Meibomian gland dysfunction is often discussed in routine dry eye disease. In oGVHD, it should be understood in a broader disease context. The glands may contribute to evaporative stress, but they are not acting in isolation. oGVHD can also involve lacrimal gland dysfunction, conjunctival inflammation, corneal epithelial damage, eyelid disease, fibrosis, and altered surface sensation.

This overlap matters. A patient with oGVHD may have both aqueous deficiency and evaporative dysfunction. The eye may not produce enough tear fluid, and the tears that are produced may evaporate too quickly or fail to spread properly. The result can be a more unstable and more symptomatic ocular surface.

Meibomian gland dysfunction may contribute to burning, dryness, irritation, redness, and fluctuating vision. Symptoms may worsen during reading, computer work, low-humidity exposure, wind, air conditioning, heating, or other conditions that increase evaporation.

In oGVHD, inflammation and tissue remodeling may complicate gland function. Eyelid margin inflammation, altered blink mechanics, and ocular surface scarring may further disrupt the normal distribution of meibomian lipids. This can intensify tear-film instability and increase mechanical stress on the cornea.

For patients and advocates, the key point is that oGVHD can affect both tear production and tear preservation. The problem is not only whether the eye makes enough fluid. It is whether the entire tear film can remain stable and protective between blinks.

For clinicians and researchers, meibomian gland dysfunction raises several measurement questions. How much of the patient’s disease is evaporative? How much is aqueous-deficient? How much is inflammatory or fibrotic? How do those features interact? Which endpoints can capture mixed-mechanism disease?

The TFOS DEWS II reports emphasize that dry eye disease commonly involves overlapping aqueous-deficient and evaporative mechanisms. oGVHD adds another layer because those mechanisms can occur in the setting of transplant-related immune disease.

The meibomian glands are not the whole story in oGVHD, but they are an important part of the ocular surface system.

Understanding them helps explain why oGVHD requires more than a simple “dry versus not dry” framework.

This article is for educational purposes only and is not medical advice.

Sources:

1. Craig JP, Nichols KK, Akpek EK, et al. “TFOS DEWS II Definition and Classification Report.” The Ocular Surface, 2017.
   https://www.tfosdewsreport.org/report-definition_and_classification/48_36/en/
2. Jones L, Downie LE, Korb D, et al. “TFOS DEWS II Management and Therapy Report.” The Ocular Surface, 2017.
   https://www.tfosdewsreport.org/report-management_and_therapy/147_36/en/
3. Inamoto Y, Valdés-Sanz N, Ogawa Y, et al. “Ocular Graft-versus-Host Disease after Hematopoietic Cell Transplantation.” Biology of Blood and Marrow Transplantation, 2019.
   https://pmc.ncbi.nlm.nih.gov/articles/PMC6362842/