| AHI | apnea-hypopnea index |
| APAP | automatic positive airway pressure |
| BCVA | best-corrected visual acuity |
| C/D | cup-to-disc ratio |
| CAD | coronary artery disease |
| CKD | chronic kidney disease |
| COPD | chronic obstruction pulmonary disease |
| CPAP | continuous positive airway pressure |
| CRT | central retinal thickness |
| CVA | cerebrovascular accident |
| CT90 | cumulative time below 90% oxygen saturation |
| DED | dry eye disease |
| DM | diabetes mellitus |
| IOP | intraocular pressure |
| SaO2 | Oxygen saturation |
| OCT | optical coherence tomography |
| OR | odds ratio |
| OSDI | Ocular Surface Disease Index |
| OSA | obstructive sleep apnea |
| PAP | positive airway pressure |
| PSG | polysomnography |
| REM | rapid eye movement |
| RNFL | retinal nerve fiber layer thickness |
| SD | standard deviation |
| TBUT | tear break-up time |
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