Dry Eye (Yumori) Flashcards
Dry Eye disease
multifactorial disease that results in symptons of discomfort, visual disturbance, tear film instability. With potential damage to ocular surface. Increased osmolarity of tear film and inflammation
two main types of dry eye
evaporative or aqueous deficient
evaporative dry eye
intrinsic and extrinsic
intrinsic dry eye causes
meibomian oil deficiency, disorders of lid aperture, low blink ratio, drug action accutane
extrinsic dry eye causes
Vitamin A deficiency, topical drugs preservatives, CL wear, ocular surface disease (allergy)
aqueous defficient dry eye
sjogren syndrome and non-sjogren dry eye
sjogren’s syndrome
chronic inflammatory disorder which affects lacrimal and salivary gland
major long-term concern for sjogren’s syndrome
lymphoma can develop which is threatening. 5% lifetime risk
ACR criteria for sjogren’s syndrome
two or more of following features: 1. positive serum anti-SSA/Ro and or anti-SSB/La 2. labial salivary gland biopsy 3. keratoconjunctivitis sicca with ocular staining score 3
probe for systemic inflammatory symptoms which include
morning stiffness and dry mouth
DED Tests
symptoms survey, tear osmolarity, external exam (lids, meibomian gland), TBUT, staining (cornea with fluorescein and conj with lissamine), tear meniscus height, schirmer w/out anesthetic
DED symptoms
burning, foreign body sensations, decreased vision, excess tearing, exacerbated by smoke, wind, heat, humidity, worse later in day, bilateral and chronic
which symptom survey do we use?
ocular surface disease index (OSDI)
NORM for OSDI
less than 13
tearlab norm
308 mOsm/L or less
inter-eye less than 8 mOsm/L