What Is the Difference Between LASIK and CRT?

If you’re exploring alternatives to glasses or contact lenses, you’ve likely come across two popular vision correction options: LASIK and Corneal Refractive Therapy (CRT). While both aim to reduce dependence on corrective eyewear, they work in very different ways and are suited to different lifestyles and vision needs. Understanding these differences can help you make a more confident, informed decision.

What Is LASIK?

LASIK (Laser-Assisted In Situ Keratomileusis) is a surgical vision correction procedure. It uses a laser to permanently reshape the cornea so that light focuses properly on the retina. The procedure is typically quick, often taking less than 15 minutes per eye, and many patients notice improved vision within a day.

Key characteristics of LASIK:

• Surgical and permanent

• Typically corrects nearsightedness, farsightedness, and astigmatism

• Rapid visual improvement

• Requires adequate corneal thickness and healthy eyes

• Not reversible

LASIK can be a great option for adults who want a long-term solution and meet specific medical criteria.

What Is Corneal Refractive Therapy (CRT)?

Corneal Refractive Therapy, often referred to as CRT, is a non-surgical vision correction method. It involves wearing specially designed rigid gas-permeable contact lenses overnight. While you sleep, these lenses gently reshape the cornea. In the morning, you remove the lenses and can see clearly throughout the day without glasses or contacts.

Key characteristics of CRT:

• Non-surgical and reversible

• Effects last for one day and require nightly lens wear

• Commonly used for nearsightedness and mild astigmatism

• Suitable for children, teens, and adults

• Can help slow myopia progression in children

CRT is especially appealing for patients who are not candidates for LASIK or who prefer a non-permanent option.

LASIK vs. CRT

• Permanence: LASIK permanently changes the shape of the cornea. CRT temporarily reshapes the cornea, and vision returns to baseline if lens wear is stopped.

• Surgery vs. Non-Surgical: LASIK is a surgical procedure involving lasers. CRT does not involve surgery or tissue removal.

• Age Eligibility: LASIK is typically recommended for adults with stable prescriptions. CRT can be used in children and teens, making it a popular option for myopia management.

• Lifestyle Considerations: LASIK may appeal to those who want a “set it and forget it” solution. CRT is ideal for people who prefer flexibility or participate in sports or activities where daytime contacts or glasses are inconvenient.

Which Option Is Right for You?

The best choice depends on several factors, including your age, prescription stability, eye health, lifestyle, and comfort with surgery. Some patients love the permanence of LASIK, while others value the flexibility and non-invasive nature of CRT. A comprehensive eye exam and consultation are essential to determine candidacy for either option.

Take the Next Step at Elevated Eyecare

Both LASIK and Corneal Refractive Therapy are effective ways to reduce dependence on glasses and contact lenses, but they serve different needs. LASIK offers a permanent, surgical solution for eligible adults, while CRT provides a reversible, non-surgical option suitable for a wider age range, including children. Understanding how each works is the first step toward choosing the vision correction method that aligns best with your goals and lifestyle.

If you’re considering LASIK or Corneal Refractive Therapy, schedule a consultation with Elevated Eyecare to find a solution that’s right for your eyes and your life. Visit our office in Denver, Colorado, or call (303) 284-9889 to book an appointment today.