| TF | Tear film |
| TFLL | Tear film lipid layer |
| MGS | Meibomian gland secretion (or simply meibum) |
| CKC | Cetalkonium chloride (C16) |
| BAK | Benzalkonium chloride (C12) |
| CN | Cationorm |
| CNE | Cationic nanoemulsion |
| DES | Dry eye syndrome |
| AT | Aqueous tear |
| PL | Polar lipid |
| NPL | Nonpolar lipid |
| MO | Mineral oil |
| BAM | Brewster angle microscopy |
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