ReLEx Smile Diagnosis and Tests

Understand the diagnostic process for ReLEx SMILE. From corneal mapping to dry eye tests, discover how Liv Hospital ensures you are a safe candidate for surgery.

Diagnosis and Tests

The Comprehensive Pre-Operative Exam

The journey toward visual freedom begins with a thorough clinical evaluation. This is not a standard eye test for glasses; it is a specialized diagnostic session that lasts between 60 and 90 minutes. During this visit, the specialist at Liv Hospital will review your entire medical history and lifestyle needs. This evaluation ensures that your eyes are in peak health and that your prescription is stable. This data-driven approach is the foundation of surgical safety, ensuring that the procedure discussed—whether it be relex smile vs lasik—is the perfect fit for your eyes.

Measuring Visual Acuity And Refraction

The first diagnostic step is measuring your precise prescription. This involves the classic "one or two" test using a phoropter.

• Testing vision at both near and far distances.
• Measuring how your eyes focus when relaxed (cycloplegic refraction).
• Determining the exact amount of myopia and astigmatism.
  

The clinician uses drops to temporarily prevent your eye from focusing, which reveals the "true" refractive error. This prevents your eye muscles from "cheating" during the test and ensures the laser is programmed with perfect accuracy.

Corneal Topography And Mapping

A critical test for any refractive candidate is corneal topography. This machine creates a highly detailed 3D map of the surface of your eye.

• It identifies the steep and flat areas of the cornea.
• It detects subtle irregularities or "hidden" conditions like keratoconus.
• It provides the data used to program the laser for a custom-tailored result.
  Much like a fingerprint, your corneal map is unique. This digital blueprint allows the surgeon to visualize exactly where tissue removal is needed.

Measuring Corneal Thickness (Pachymetry)

The safety of your procedure depends on the thickness of your cornea. Pachymetry is a quick, non-contact test used to measure this. Because the laser removes a microscopic "lenticule" from within the cornea, there must be enough tissue left to maintain the eye's strength.

• Ensures the "residual stromal bed" is thick enough for long-term stability.
• Helps the doctor decide if you are a candidate for relex smile eye surgery.
• Minimizes the risk of post-operative corneal thinning (ectasia).
  

This diagnostic data is a non-negotiable safety check performed on every patient at Liv Hospital.

Slit Lamp Microscopic Exam

The slit lamp is a specialized high-powered microscope that allows the doctor to see the eye's structures in three dimensions.

• Cornea: Checking for any scars or previous infections.
• Tear Film: Assessing the quality and volume of your tears.
• Lens: Ruling out early signs of cataracts.
• Eyelids: Ensuring there is no inflammation like blepharitis.
  

This hands-on exam ensures that the "canvas" the surgeon is working on is in perfect health. If any minor issues like dryness or inflammation are found, they are treated before the surgery proceeds.

Pupil Size and Response Testing

The size of your pupils in different lighting conditions is an essential diagnostic factor. Some people have naturally large pupils, which can increase the risk of seeing halos or glare at night after surgery.

• Measurement of "mesopic" pupil size (dim light).
• Ensures the laser "optical zone" is large enough to cover the entire pupil area.
• Prevents "edge effects" that can cause nighttime visual disturbances.
  

By tailoring the treatment zone to your pupil size, the specialists at Liv Hospital ensure that your night vision remains clear and comfortable.

Optical Coherence Tomography (OCT)

OCT is an advanced imaging technology that uses light waves to take cross-sectional pictures of your eye.

• It provides a microscopic view of the corneal layers.
• It ensures there are no abnormalities in the "interface" where the laser will work.
• It helps measure the exact depth for the laser incision.
  

This technology allows for a level of planning that was impossible with older diagnostic tools, adding an extra layer of safety to the surgical process.

Dilated Retinal Evaluation

To ensure the back of your eye is as healthy as the front, a dilated retinal exam is performed. Using special drops to widen the pupil, the specialist looks at the retina, macula, and optic nerve.

• Checking for retinal holes or tears (common in highly nearsighted people).
• Ruling out signs of glaucoma or macular degeneration.
• Ensuring the "film" of your eye is in good condition to receive the new, clear images.
  

Finding and treating a retinal issue before vision correction is a vital safety step that protects your sight for the long term.

Dry Eye Assessment (Tear Film Analysis)

Post-operative comfort depends heavily on the health of your tears. The diagnostic team performs several tests to check tear quality.

• Schirmer's Test: Using a tiny paper strip to see how many tears you produce.
• Tear Break-Up Time (TBUT): Seeing how long the tear film stays stable.
  

One of the main reasons patients choose relex smile over other methods is because it is less likely to worsen dry eye. However, optimizing the eye surface beforehand ensures the fastest possible healing and the best visual clarity.

Determining The Final Surgical Plan

Once all the tests are complete, the specialist reviews the data to reach a final conclusion. You will be told if you are a "Go" for surgery and which specific procedure is safest for your unique anatomy.

• Reviewing the digital maps of your eyes.
• Explaining the expected visual outcome and recovery time.
• Discussing the choice of relex smile vs lasik based on your results.
  

This final consultation is a collaborative process where your questions are answered, ensuring you feel calm, confident, and prepared for your life-changing procedure at Liv Hospital.