Blepharitis other diagnostic studies
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [2]; Associate Editor(s)-in-Chief: Sara Mehrsefat, M.D. [3]
Overview
Other diagnostic studies for blepharitis include slit lamp examination, tear break up time (TBUT), and measurement of tear osmolarity.[1][2][3]
Other Diagnostic Studies
Other diagnostic studies for blepharitis include:[1][2][3][4]
On slit lamp examination, blepharitis is characterized by:
- Meibomian gland enlargement
- Waxy secretions at the gland openings
- Lid margin neovascularization and dilation of existing blood vessels
- Ulcerations along the eyelid margin.
- Corneal nodules
- Corneal margin ulcer
- Superficial corneal pannus
Tear Break Up Time
On tear break up time (TBUT), blepharitis is characterized by tear film instability and rapid evaporation.
Measurement of Tear Osmolarity
Other diagnostic studies for blepharitis include measurement of tear osmolarity. Blepharitis concurrent with dry eye syndrome may be characterized by osmolarity of 316 mOsm/L or greater.
Microscopic evaluation of eyelashes
On microscopic evaluation of eyelashes, chronic blepharoconjunctivitis may be characterized by the presence of Demodex mites.
Images
The following are slit lamp examination images associated with blepharitis.[1][5]
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Gland expression performed at the slit lamp -
Waxy secretions at the gland openings -
Cloudy expressed meibum (arrows) -
Corneal pannus
References
- ↑ 1.0 1.1 1.2 Tomlinson A, Bron AJ, Korb DR, Amano S, Paugh JR, Pearce EI; et al. (2011). "The international workshop on meibomian gland dysfunction: report of the diagnosis subcommittee". Invest Ophthalmol Vis Sci. 52 (4): 2006–49. doi:10.1167/iovs.10-6997f. PMC 3072162. PMID 21450918.
- ↑ 2.0 2.1 Driver PJ, Lemp MA (1996). "Meibomian gland dysfunction". Surv Ophthalmol. 40 (5): 343–67. PMID 8779082.
- ↑ 3.0 3.1 Bachmeyer C, Bégon E (2013). "Chronic blepharitis". Neth J Med. 71 (5): 259–63. PMID 23799315.
- ↑ McCulley JP, Dougherty JM (1985). "Blepharitis associated with acne rosacea and seborrheic dermatitis". Int Ophthalmol Clin. 25 (1): 159–72. PMID 3156100.
- ↑ American Academy of Ophthalmology/eyewiki [1]