124 E Bandera Road
Boerne TX 78006

LASIK Pre and Post-Up Evaluations 

LASIK is a refractive surgery that is able to correct vision in some patients with nearsightedness (myopia), farsightedness (hyperopia) and astigmatism.  It is best to have an initial consultation with Dr. Johnson first to determine if you would be a candidate.  She will advise you if she would recommend it for you or if there is another refractive procedure that would be more appropriate for you.

Here is a description of the LASIK process:

The typical process for a standard laser eye surgery involves five simple steps:

  1. 1. First, anesthetic eye drops are applied to the eye.

  2. 2. Your LASIK eye surgeon then creates a protective flap and gently lifts it, exposing the inner corneal tissue. Your vision can become very blurred during this part of the laser eye surgery. LASIK patients are generally only able to see the laser light and surrounding overhead lighting.

  3. 3. Computer-controlled pulses of cool laser light are applied to the inner layers of your cornea. As the laser pulses, it makes a ticking sound. The laser reshapes your inner corneal layer to mimic your contact lens or glasses prescription. For precise correction, an eye-tracking device tracks your eye movements up to 4,000 times per second.

  4. 4. After the tissue is reshaped, the corneal flap is carefully repositioned. After checking for air pockets and any other debris that could hinder the healing process, your LASIK surgeon gently replaces your corneal flap and aligns it to its original position. It heals naturally and securely.

  5. 5. After a nap, most LASIK surgery patients are quite comfortable, but your eye may feel slightly irritated for a few hours.

Is LASIK Safe?

Like all surgeries, there is a potential for risks and complications with LASIK surgery. Every eye heals differently, making it difficult to predict exactly how your eye will respond. Even though the majority of patients are very happy with the results of their LASIK procedure, every patient should carefully weigh LASIK risks against potential LASIK benefits.

Is LASIK Guaranteed?

LASIK can largely decrease your dependency on visual aids but does not guarantee that you will never need to use contacts or glasses again. It is important to keep those facts in mind when planning your laser procedure and weighing the risks.

Who Should Not Get LASIK?

Patients with collagen vascular, autoimmune or immunodeficiency diseases, pregnant or nursing women, signs of keratoconus or abnormal corneal topography or who are taking one or both of the medications isotretinoin (Accutane™) and amiodarone hydrochloride (Cordarone™) should not have LASIK. For more information, visit the FDA's Medical Devices page.


While LASIK surgery is not right for everyone, it can treat severe degrees of nearsightedness (myopia), farsightedness (hyperopia) and abnormal shape of the cornea (astigmatism) in most cases. It's important that patients have realistic expectations about their results.

LASIK surgery aims to reduce your dependency on glasses or contact lenses, but LASIK surgery does not guarantee 20/20 vision. Most patients, however, experience significantly improved vision.

Contact Lenses and Your LASIK Eye Surgery

While contact lenses are a fantastic alternative to glasses, continued long-term wear can actually alter the original shape of your corneas. This can cause incorrect visual acuity results during your pre-operative testing. Your corneas will return to their original shape after a certain period of time without contact lenses. LASIK surgery should not be performed until your corneas return to their original shape. Your doctor will determine how much time your eyes need to return to their original shape.