LASIK, Aberrations, and One Year Follow Up

Posted By on Oct 31, 2018 in LASIK Surgery | 0 comments

Ophthalmologists trained in LASIK offer a variety of ways to patients to increase vision. Myopia or nearsightedness continues to increase globally and even in the USA with 42 percent of Americans with a range of ages from 12 to 54 having it. It lists as one of the most common eye problems. Refractive surgeries such as LASIK and PRK improved the field of Ophthalmology since aberrations of the eye could then become precisely measured. Aberrations define as a difference in an optical path length when a ray of light passes a point in the pupil along with a chief ray that passes through the center of the pupil. Having this type of knowledge allowed ophthalmologists to create wavefront technology that forms a shaped wave of light placed in the eye then captures the reflections. Any reflections distorted become measured by giving information about the eye. The same can become said of wavefront-guided PRK (photorefractive keratectomy).

Higher order aberrations

Refractive error indicates higher order aberrations. A refractive error shows that the shape of a patient’s eye will not allow the light to correctly bend which leads to not lighting the needed area on the retina. This misalignment causes patients to have blurred images. A higher order aberration defines as a refractive error that will not correct by bending light with glasses or contact lenses. It means some type of surgery must happen to correct the visions problem. So which surgery?  A patient does not decide that. At the Houston LASIK clinic, patients come in and receive information and counseling from the staff. Once satisfied they can arrange a consultation with one of the doctors to discuss laser eye surgery options. Which type of surgery to use depends on what the ophthalmologist thinks will be the best outcome.


Wavefront LASIK and PRK both have given excellent results in correcting refractive errors of myopia. The Journal of Ophthalmic and Vision Research in 2016 published a study comparing the two technologies to see which method worked best on myopia. Before any comparison of technology, the parameters used for patient selection became a significant concentration. To eliminate other causes both the PRK and LASIK operations became performed with at Technolar 217z Bausch & Lomb unit. If a patient has a considerable amount of higher-order aberrations before surgery wavefront LASIK and wavefront PRK gave nearly the same result in improving patient vision over the long term as in a year. In the first three months, wavefront LASIK outdid the wavefront PRK but as time marched on the earlier difference disappeared. The significant factors that make the difference overall remain what the patient comes in with, and the expertise of the doctor who is doing the surgery making the decisions. Which technology to use should be decided by the doctor.


Having surgery with such stunning results that improve vision makes an unusual mark on the world of medicine. Having choices on the techniques used lets doctors decide on the best options for each patient. Myopia may be increasing, but the ophthalmologists have the solution in place to deal with it.

Houston Lasik leads in providing premium LASIK technologies to Houston, Sugar Land, and the surrounding region. The center’s award-winning medical director introduced revolutionary technologies such as iLASIK to the region. This technology is used by NASA astronauts, Navy SEALS and Air Force fighter pilots. At Houston Lasik, you can now receive the same treatment. For more information, please call (281) 240-0478.



Comparison higher order aberration after wavefront guided LASIK and PRK one year follow up

Sterling Municipal Library Online Health Reference Section has professional journals (may be accessed through Harris County Library System)