Dry Eye Syndrome Differential Diagnoses
- Author: C Stephen Foster, MD, FACS, FACR, FAAO; Chief Editor: Hampton Roy Sr, MD more...
Diagnostic Considerations
- Cranial nerve V trauma or corneal surgery
- Medicamentosa
- Nocturnal lagophthalmos
- Thygeson superficial punctate keratopathy
Differential Diagnoses
- Bell Palsy
- Blepharitis, Adult
- Conjunctivitis, Allergic
- Contact Lens Complications
- Floppy Eyelid Syndrome
- Keratoconjunctivitis, Superior Limbic
- Keratopathy, Neurotrophic
- Ocular Manifestations of HIV
- Ocular Rosacea
- Thyroid Ophthalmopathy
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| Dry Eye Severity level | 1 | 2 | 3 | 4 (Must have signs and symptoms.) |
| Discomfort, severity & frequency | Mild and/or episodic; occurs under environmental stress | Moderate episodic or chronic, stress or no stress | Severe frequent or constant without stress | Severe and/or disabling and constant |
| Visual symptoms | None or episodic mild fatigue | Annoying and/or activity-limiting episodic | Annoying, chronic and/or constant, limiting activity | Constant and/or possibly disabling |
| Conjunctival injection | None to mild | None to mild | +/– | +/++ |
| Conjunctival staining | None to mild | Variable | Moderate to marked | Marked |
| Corneal staining (severity/location) | None to mild | Variable | Marked central | Severe punctate erosions |
| Corneal/tear signs | None to mild | Mild debris, decreased meniscus | Filamentary keratitis, mucus clumping, increased tear debris | Filamentary keratitis, mucus clumping, increased tear debris, ulceration |
| Lid/meibomian glands | MGD variably present | MGD variably present | Frequent | Trichiasis, keratinization, symblepharon |
| TFBUT (sec) | Variable | ≤10 | ≤5 | Immediate |
| Schirmer score (mm/5 min) | Variable | ≤10 | ≤5 | ≤2 |

