Cataracts vs. Laser Vision Correction: Different Treatments for Different Problems

Cataracts

Clouding of the natural crystalline lens → blurred vision, glare, color fading. Treatment: Phacoemulsification with intraocular lens (IOL) implantation. The cloudy lens is removed and replaced.

Laser Vision Correction (LASIK, PRK, SMILE)

Reshapes the cornea to correct refractive errors (myopia, hyperopia, astigmatism). Does not treat cataracts. The natural lens remains intact.

Key Distinction

Aspect	Cataract Surgery	Laser Vision Correction
Target	Crystalline lens	Cornea
Indication	Lens opacity	Refractive error
Lens status	Removed & replaced	Unchanged
Can combine?	Yes – premium IOLs (toric, multifocal) can correct refractive error at time of cataract surgery.

Clinical Pearl

Patients with early cataracts are not candidates for corneal laser surgery; the cataract will progress and obscure vision. Cataract surgery with appropriate IOL selection addresses both issues simultaneously.