This case-sensitive code system http://hl7.org/cda/us/eyecare/CodeSystem/DryEyeTestAssessmentCodes defines the following codes:

Code	Display
NEI-VFQ25	National Eye Institute Visual Function Questionnaire-25
OSDI	Ocular Surface Disease Index
SPEED	Standard Patient Evaluation of Eye Dryness Questionnaire
DEQ-5	Dry Eye Questionnaire
CLDEQ-8	Contact Lens Dry Eye Questionnaire
IDEEL	Impact of Dry Eye in Everyday Life
McCarty	McCarty Symptom Questionnaire
McMonnies	McMonnies Questionnaire
OCI	Ocular Comfort Index
SANDE	Symptom Assessment in Dry Eye
TERTC-DEQ	Texas Eye Research and Technology Center Dry Eye Questionnaire
DEEP	Dry Eye Screening for Dry Eye Epidemiology Projects
SIDEQ	Single Item Dry Eye Questionnaire
DEQS	Dry Eye-Related Quality-of-life
UNC-DEMS	University of North Carolina Dry Eye Management Scale
CDERQOL	Chinese version of Dry Eye-Related Quality of Life