Entries by Jamie Dunne

The Lacrimal Functional Unit and Why It Matters in oGVHD

The eye maintains comfort and clarity through a coordinated biological system. One useful way to understand this system is the lacrimal functional unit. The lacrimal functional unit includes the lacrimal glands, ocular surface, eyelids, meibomian glands, conjunctival goblet cells, sensory nerves, and neural reflex pathways that help regulate tearing and blinking. These structures work together […]

The Immunology of Ocular GVHD

Ocular GVHD (oGVHD) begins with transplant immunology, but its effects can become intensely local. After allogeneic hematopoietic stem cell transplantation, the donor immune system may recognize recipient tissues as foreign. In chronic graft-versus-host disease, immune-mediated inflammation and fibrosis can affect multiple organs, including the skin, mouth, gastrointestinal tract, liver, lungs, fascia, genital tract, and eyes. […]

Why oGVHD Is More Than Dry Eye

Ocular graft-versus-host disease, often abbreviated as oGVHD, is sometimes described as a severe form of dry eye. That shorthand is understandable, but it is incomplete. Dry eye is one of the most visible ways oGVHD is experienced by patients. Burning, grittiness, dryness, light sensitivity, foreign body sensation, tearing, and fluctuating vision are common complaints. But […]

Why the Tear Film Matters More Than Most People Realize

Most people think of tears as something that appears when we cry. In ocular health, tears are much more than water. They are a living, protective system that supports comfort, vision, and the health of the ocular surface. The tear film coats the front of the eye every time we blink. It helps keep the […]