| AAO | American Academy of Ophthalmology | |
| AAODL | Atmospheric Aerosols and Optics Data Library | |
| ACCP | ASNT Central Certification Program | |
| ACOLS | Australian Conference on Optics Lasers and Spectroscopy | |
| AFO | Advanced Fiber Optics | |
| AFOC | Adaptive Fiber Optics Collimator | |
| AIO | Applied Industrial Optics | |
| ALOP | Active Learning in Optics and Photonics | |
| AMO | Advanced Multisport Optics | |
| AO | Aspheric Optics | |
| AOC | Applied Optics Center | |
| AOCG | Applied Optics Complutense Group | |
| AODP | Adaptive Optics Development Program | |
| AOF | Adaptive Optics Facility | |
| AOLI | Adaptive Optics and Lucky Imager | |
| AOLI | Adaptive Optics Lucky Imager | |
| AOOG | Atmospheric and Ocean Optics Group | |
| AOR | Applied Optics Research | |
| AOS | Aspherical Optics System | |
| APO | Apochromat chromatic & spherical aberration reduction lens | |
| ASNT | American Society for Nondestructive Testing | |
| BICOP | British and Irish Conference on Optics and Photonics | |
| BOE | Biomedical Optics Express | |
| BV | Blurred Vision | |
| BVD | Blurred Vision Disease | |
