Noncontact Surface IR Meibography and Effect of Glare on Visualization of Meibomian Gland Structure
Purpose
To evaluate the effect of glare on the images captured using standard non-contact surface IR Meibography.
Methods
The lower lids of fifteen subjects were imaged using standard non-contact Meibography (Static Light Meibographer). The resulting images were evaluated and compared for the purposes of ease of visibility of the meibomian gland structures. In particular the images were evaluated for glare and the extent to which glare obstructed visualization of meibomian gland structure.
Results
Glare was seen on all images of all fifteen subjects lower eyelids. The location of the glare varied significantly between images. In 5 images from 5 subjects the glare was located in a region of where gland structure was a concern and required visual investigation. The area of structural concern could not be visualized through the glare in any of the five images. The lower lids of these subjects were re-imaged in an attempt to eliminate the glare by repositioning the patient or the everted eyelid. The re-imaging process was helpful in relocating but not eliminating the glare issue.
Conclusion
Glare is important consideration when imaging meibomian gland structure with standard surface IR technology. When possible, technicians should capture multiple images to vary the location of the surface glare so as to optimize the ability of the physician to assess the health of the meibomian gland structure.