Which of the following is an adverse effect of LASIK surgery?

• A. Ear ringing
• B. Nosebleed
• C. Hair loss
• D. Dry eyes

Answer: (D)

Dry eyes after LASIK are common because the procedure involves creating a corneal flap and reshaping the surface with a laser, which can disrupt the corneal nerves that stimulate tear production. This nerve disruption reduces tear reflex and tear film stability, leading to dryness, gritty or burning sensations, and fluctuating vision in the early postoperative period. The dryness may be temporary, lasting weeks to months, or in some cases longer, and is managed with regular artificial tears, ocular lubricants, and sometimes anti-inflammatory or immunomodulatory drops or punctual plugs if needed. The other options don’t fit because ear ringing, nosebleeds, and hair loss aren’t typical adverse effects of corneal laser refractive surgery, which primarily affects the eye and tear film.