Disclaimer: This article is intended solely for informational and educational purposes only. It does not constitute medical advice.
Cataract surgery is among the most commonly and successfully performed operations in medicine, with more than 26 million cases performed worldwide each year (Chen et al., 2021). Although recovery is straightforward for most patients, knowing what to expect after cataract surgery is beneficial for patients and caregivers, as they can set expectations, identify any warning signs of complications, and make any necessary preparations.
Most modern cataract operations are performed on an outpatient basis using phacoemulsification, in which the surgeon breaks up and removes the clouded lens through a very small incision before implanting an artificial intraocular lens (Lapp et al., 2023). Because incisions are now often 1.8 millimeters or smaller, surgically induced astigmatism and inflammation have been substantially reduced compared with older techniques, and stitches are rarely needed (Chen et al., 2021). Vision often begins improving within a day or two, though full stabilization of refraction and visual clarity can take several weeks.
Some visual blurring, light sensitivity, and mild discomfort are expected in the first days after cataract surgery and generally resolve on their own. However, patients and clinicians should remain alert to two of the more frequent complications: postoperative inflammation and dry eye.
Cystoid macular edema, a swelling of the retina caused by postoperative inflammation, is a well-recognized cause of reduced vision after otherwise uneventful surgery, though its incidence has fallen to roughly 0.2–2.4% with modern techniques (Kato et al., 2019). Topical steroids and nonsteroidal anti-inflammatory drugs (NSAIDs) are commonly prescribed to prevent this, though NSAIDs themselves can contribute to ocular surface problems, including dry eye and, in rare severe cases, corneal thinning or ulceration (Kato et al., 2019).
Dry eye is a more common side effect after cataract surgery, with studies reporting that anywhere from about 10% to over 50% of patients experience some degree of dry eye in the weeks following the procedure, depending on prior eye health and the medications used (Kato et al., 2019). Patients with pre-existing conditions such as diabetes or autoimmune disease may be more susceptible.
Refractive outcomes are important for patients to understand, as cataract surgery does not return perfect vision. Many patients still require glasses for certain distances afterward, particularly if a standard monofocal lens was implanted, since these lenses provide a single point of clear focus (Lapp et al., 2023).
Premium lens replacement options, including multifocal, extended depth-of-focus, and toric lenses for astigmatism, can reduce dependence on glasses but may come with trade-offs such as increased glare or halos around lights (Chen et al., 2021; Lapp et al., 2023). Residual refractive error remains one of the leading reasons patients do not achieve their best possible vision after surgery, underscoring the importance of accurate lens power calculation and, when needed, follow-up correction with glasses (Han et al., 2023).
Longer-term outcomes are generally favorable, though a large global review found meaningful differences in visual results depending on where patients live: over 70% of patients in high-income countries achieve good uncorrected vision after surgery, compared with a more variable and often lower proportion in low- and middle-income countries, where complications, uncorrected refractive error, and other eye conditions play a larger role (Han et al., 2023). One common late complication to be aware of is posterior capsule opacification, a clouding of the membrane behind the implanted lens that can develop months or years after surgery; it is easily treated with a quick laser procedure (Han et al., 2023).
Cataract surgery restores good vision for the vast majority of patients, but attentive follow-up care that includes monitoring for inflammation, dry eye, and refractive needs remains essential. The ophthalmologist performing the surgery should provide specific postoperative care instructions to patients and brief them on what to expect. The ophthalmologist remains the go-to resource for patients with questions or concerning symptoms after cataract surgery.
References
- Chen, X., Xu, J., Chen, X., & Yao, K. (2021). Cataract: Advances in surgery and whether surgery remains the only treatment in future. Advances in Ophthalmology Practice and Research, 1, 100008. https://doi.org/10.1016/j.aopr.2021.100008
- Han, X., Zhang, J., Liu, Z., Tan, X., Jin, G., He, M., Luo, L., & Liu, Y. (2023). Real-world visual outcomes of cataract surgery based on population-based studies: A systematic review. British Journal of Ophthalmology, 107, 1056–1065. https://doi.org/10.1136/bjophthalmol-2021-320997
- Kato, K., Miyake, K., Hirano, K., & Kondo, M. (2019). Management of postoperative inflammation and dry eye after cataract surgery. Cornea, 38(Supplement 1), S25–S33. https://journals.lww.com/corneajrnl
- Lapp, T., Wacker, K., Heinz, C., Maier, P., Eberwein, P., & Reinhard, T. (2023). Cataract surgery—Indications, techniques, and intraocular lens selection. Deutsches Ärzteblatt International, 120, 377–386. https://doi.org/10.3238/arztebl.m2023.0028
