Why Do Eyes Feel Dry After Cataract Surgery?
Postoperative dry eye is a common and well-documented complication following cataract surgery. While the procedure itself—typically performed via phacoemulsification with intraocular lens implantation
Postoperative dry eye is a common and well-documented complication following cataract surgery. While the procedure itself—typically performed via phacoemulsification with intraocular lens implantation—is highly successful in restoring visual clarity, it can transiently disrupt the ocular surface’s delicate homeostasis.
The underlying mechanisms are multifactorial. Surgical incisions, even when small (often 2.2–2.8 mm), interrupt corneal nerve fibers, particularly those of the subbasal plexus. This neurotrophic disruption reduces corneal sensation and impairs reflex tearing, leading to decreased aqueous tear production. Additionally, intraoperative irrigation solutions, topical anesthetics, and postoperative corticosteroid or antibiotic eye drops may contribute to tear film instability and epithelial toxicity. Inflammation—though usually mild and self-limited—can further suppress goblet cell function in the conjunctiva, reducing mucin secretion essential for tear film adherence.
Clinically, patients often report symptoms such as grittiness, burning, foreign-body sensation, fluctuating vision, or paradoxical epiphora (excessive tearing due to reflex hypersecretion in response to dryness). Signs may include reduced tear break-up time (TBUT), increased corneal fluorescein staining, and meibomian gland dysfunction—especially in older adults, who frequently have preexisting age-related changes in lacrimal and meibomian gland function.
Management is typically conservative and symptom-driven. First-line interventions include preservative-free artificial tears several times daily, warm compresses with lid hygiene for concurrent meibomian gland dysfunction, and environmental modifications (e.g., humidifiers, minimizing screen time with frequent blinking). In persistent cases, anti-inflammatory agents such as topical cyclosporine A or lifitegrast may be considered. Most patients experience gradual improvement over 1–3 months as corneal nerves regenerate and ocular surface equilibrium is restored.
Preoperatively, clinicians should assess baseline tear film status—particularly in patients with known dry eye disease, autoimmune conditions (e.g., Sjögren syndrome), or prolonged contact lens wear—to optimize management strategies and set realistic expectations. Early recognition and proactive treatment significantly improve postoperative comfort and visual outcomes.