Can Dry Eye Affect Your Cataract Surgery Result?

Can dry eye affect your cataract surgery result? It can — because an unstable tear film can sometimes make the measurements used to plan cataract surgery less repeatable. This can affect measurements of the cornea, astigmatism and, in some cases, the calculations used to choose the lens implanted during surgery. In this video, I explain why the tear film matters, why symptoms don't always tell us how significant dry eye is, what I look for when cataract measurements don't agree, and why measurement stability can become particularly important when planning toric, EDOF or multifocal lenses. Importantly, this does not mean everyone with dry eye needs weeks of treatment or that dry eye will automatically cause a poor cataract surgery result. The more useful question is: Is the surface of the eye stable enough for the precision of the decision we're trying to make? CHAPTERS 0:00 Can dry eye affect cataract surgery results? 1:32 Why tears can affect cataract measurements 3:11 Fluctuating blur versus cataract blur 4:46 Can we trust the measurements? 6:28 Why it matters more for some lens choices 8:16 The principle I use when planning surgery 9:54 What happens if dry eye is found? 11:12 What should you take away? RELATED VIDEO EDOF vs Multifocal: Which Should You Choose?    • EDOF vs Multifocal Lenses Which Should You...   SELECTED EVIDENCE Alreshidi SO et al. Effect of Preoperative Ocular Surface Optimization on Biometric Accuracy and Refractive Outcomes After Cataract Surgery: A Systematic Review with Narrative and Exploratory Quantitative Synthesis. Clinical Ophthalmology. 2026;20:642583. DOI: 10.2147/OPTH.S642583 Effect of dry eye on the reliability of keratometry for cataract surgery planning. PMID: 37919153. Influence of Dry Eye Disease on the Measurement Repeatability of Corneal Curvature Radius and Axial Length in Patients with Cataract. PMID: 35160160. This video is for general education only and does not replace an individual assessment or medical advice from your own ophthalmologist or healthcare professional. #CataractSurgery #DryEye #EyeHealth