Introduction
Dry eye is the most common short-term side effect of LASIK and for a small number of people it can persist longer. Knowing why dry eye occurs, which symptoms matter, what you and your surgeon can do beforehand, and which treatments are available afterwards helps reduce the risk and improves outcomes. This short guide covers the essentials in plain language.
Why dry eye happens after LASIK
LASIK temporarily disrupts corneal nerves when the flap is created or lifted, which reduces the reflex that stimulates tear production. The tear film and blink pattern can also change while the cornea heals. Most cases are mild and improve as nerves regenerate over weeks to months, but anyone with pre-existing dry eye, contact-lens intolerance, or eyelid margin disease is at higher risk of prolonged symptoms.
Symptoms to watch for (when to contact your doctor)
Common complaints include a gritty or burning sensation, intermittent blurred vision (often worse with reading or screen use), light sensitivity, and a feeling of eye fatigue. Mild, short-lived symptoms are expected after surgery; however, if dryness is persistent, getting worse, or affecting your vision, contact your surgeon promptly so treatment can begin before the surface is damaged.
How to lower your risk before surgery
Be open at consultation about any history of dry eye, contact-lens discomfort, frequent redness, or allergies. A responsible surgeon will assess tear production, tear-film quality, eyelid health and corneal shape, and treat any problems first. Treating eyelid inflammation, improving lid hygiene, stabilising the ocular surface, and postponing surgery until the surface is healthy are sensible steps to reduce post-op dryness.
Prevention and immediate post-operative care
After LASIK, follow a prescribed lubrication schedule using preservative-free artificial tears several times a day. Surgeons may also recommend short courses of topical anti-inflammatory drops if indicated and will arrange early follow-ups to monitor healing. Simple home measures — using a humidifier, reducing screen time in the first days, avoiding smoke or dusty places — help. Early recognition and escalation of symptoms to prescription therapies can prevent longer-term problems.
Treatment options for persistent or moderate dry eye
Management is stepped and tailored. First-line measures include regular preservative-free lubricants, improved eyelid hygiene for meibomian gland dysfunction, and environmental adjustments. If inflammation or poor tear quality persists, prescription topical therapies such as immunomodulatory drops may be used. Procedural options include punctal occlusion (temporary or permanent plugs) to retain tears, in-office thermal or gland therapies for meibomian dysfunction, and, for severe cases, biological eye drops like autologous serum. Your eye care team will choose and escalate treatments based on severity and response.
Conclusion
Dry eye after LASIK is common but usually temporary; the best protections are careful pre-operative screening, active peri-operative surface management, and prompt treatment if symptoms persist. If you are considering LASIK, ask for a thorough ocular surface assessment, follow post-op lubrication and care instructions closely, and keep in touch with your surgeon — early action preserves both comfort and visual quality.
