Email us or 1-866-LASIK INFO

The LASIK Pre-Operative Exam at H Rubin Laser Eye

After making the decision to proceed with LASIK, you will most likely have many questions about what to expect. H Rubin Laser Eye Centers performs an extensive pre-operative exam. A variety of special tests will be used to evaluate your current visual needs and assist in the development of a specialized LASIK procedure that will give you the best possible result. We strongly feel that with better preparation, we can ensure better results. The pre-operative exam testing will usually require 60 to 90 minutes for completion.

The following are the steps taken and tests performed as a part of our LAISK pre-operative exam.

General health and eye health assessment: We start by asking you to complete a brief questionnaire regarding your vision, your interests, visual needs, eye health and medical history.

WaveScan / Wavefront Analysis: The WaveScan Wavefront system is a test utilizing radio waves to capture the unique imperfections in your vision.

Auto-Refraction: A computer controlled test that will measure your prescription. It also evaluates how light is changed as it enters the eye. This is quick, simple, and painless.

Corneal Topography: Measurement of the front corneal surface using computerized mapping technology.

Prescription Analysis: Measurement of the prescription in your current glasses.

Visual Acuity: Measurement of you unaided and corrected vision.

Pupillometry: Measurement of your pupil size in darkness.

Subjective Refraction: Measurement of your best current prescription.

Slit-Lamp Microscopy: Examination of the eyes using a lamp and microscope.

Tonometry: Measurement of intraocular pressure.

Pachymetry: Measurement of corneal thickness.

Based on the information gathered above, the doctors staff at H Rubin laser Eye will be able to provide advice concerning the best options for you with respect to LASIK, as well as any other forms of vision correction.

If you are interested in more detailed explanations regarding the tests performed, please read on. We have explained the reasons for the test (and why the results are important) in more detail below.

General Health Review: It is known that certain medical conditions can result in abnormalities of collagen, or abnormal healing of collagen. Since LASIK involves sculpting the collagen layer of the cornea, our doctors will want to know in advance if any of these potential problems exist. Individuals with conditions like rheumatoid arthritis, systemic lupus, or any other affliction that results in inflammation of the joints or soft-tissue are generally advised that they are not ideal candidates, due to abnormal collagen. Also, the hormonal changes that accompany pregnancy may cause a change in bones, joints, soft tissue, and the prescription of the eyes, so if you are pregnant, or are considering pregnancy prior to your LASIK procedure, you may be better served to wait and proceed at a more optimum time.

Eye Health Assessment: When considering LASIK, healthy eyes, eyelids, ocular surface and related structures are necessary prior to any surgical procedure.

WaveScan / Wavefront Analysis: This ground-breaking technology assists in the collection of data allowing our surgical team to capture information that will help us to generate specific treatment options that are truly individualized to your exact needs.

Auto-Refraction: The automated refraction portion of the consultation is simple and painless. Patients will be asked to sit in front of the machine and the computer-controlled device will evaluate one eye at a time. The process takes less than a minute per eye, and helps determine the patient's prescription.

Corneal Topography: Also known as photokeratoscopy or videokeratography, this procedure is a non-invasive medical imaging technique for mapping the surface curvature of the cornea. Since the cornea is normally responsible for over 70% of the eye's refractive power, its topology is significant in determining the quality of vision. The three-dimensional map created from this procedure is valuable during this pre-operative phase of your encounter, and can shed light into a number of issues that may be beneficial during the planning process for refractive surgery.

Prescription Analysis: We consider many factors during your LASIK work-up. One of those factors in the stability of your prescription. Although we will conduct a thorough examination, we often use a device called a lensometer to read the prescription in your current or most recent pair of glasses. The parameters we will be addressing are derived from the prescriptions written by your eye doctor; sphere, cylinder, axis, add, and in a few cases, prism.

Pupillometry: By measuring your pupil size, we will be able to evaluate how you may react to the surgical procedure. If your pupil size is not ideal, we can advise you on what side effects may occur. We will want you to know in advance if you will experience incidents of glare, halo, blur, or image distortion.

Subjective Refraction: Most commonly known as the part of the eye exam where your doctor asks you to look through the phoropter, spins the dials and asks "Which is better, one or two", this is the fine-tuning" of the prescription. This is a subjective, interactive process where feedback is essential. We encourage patients to be as sure as possible about their responses because this information is key to your outcome. If necessary, feel free to ask the doctor to see your choices again ... as many times as necessary.

Slit-Lamp Microscopy: The eyelids and eyes are examined in high magnification using a special microscope with a slit-shaped beam. This affords a close-up view of the eyelids, conjunctiva (inside lining of the lids and membrane covering the sclera), cornea, sclera, iris, anterior chamber, pupil, lens, and anterior vitreous. Eye pressure can also be measured with a tonometer attached to the slit-lamp microscope.

Tonometry: Measurement of eye pressure is performed as a screening test to aid in the detection of glaucoma. Elevation of eye pressure is one of the major risk factors in this condition.

Pachymetry: Prior to any elective vision correction surgery, it is important to measure corneal thickness. Since laser treatment involves removal of microscopic lasers of the middle layer of the cornea, our doctors will want to establish the original thickness prior to the alteration of the eye. It is widely agreed that the cornea can retain its structural integrity as long as the sculpting done by the laser does not reduce thickness below a safe level.

The charge for the pre-operative exam is $160.00. This fee is separate from the LASIK procedure fee. If you decide not to have the procedure immediately, the pre-operative exam information is good for up to 3 months, at which point the pre-operative exam would need to be performed again.