Diagnostic exams - Bogota Laser

Elevation topography

We employ advanced ophthalmic analysis technology to thoroughly assess the cornea, including its anterior and posterior surfaces, as well as the anterior chamber and iris of the eye. This comprehensive evaluation is particularly essential for cases involving conditions like keratoconus, where eye surgery or intra-stromal rings may be required. It also serves as a reliable indicator of the risk of future complications with laser surgery, such as ectasias. Moreover, this examination provides a more precise calculation of the intraocular lens in individuals with a history of refractive surgery. We utilize cutting-edge equipment, such as the Pentacam HR by Oculus and Sirius by Schwind, to perform these assessments.

Recommendations: If you wear soft contact lenses, remove them at least 3 days before the examination; if you wear hard contact lenses, remove them 8 days in advance. No dilation is required.

Diagnostic Center: Pentacam, Sirius

Pachymetry

One of the essential aspects of our diagnostic process is measuring the thickness of the cornea in microns. This measurement allows us to determine the most suitable and safest procedure for correcting visual defects, including astigmatism, hyperopia, myopia, presbyopia, and keratoconus. To perform this evaluation, we utilize advanced equipment such as the Pentacam HR by Oculus or Sirius by Schwind, specifically designed for pachymetry.

Recommendations: If you wear soft contact lenses, remove them at least 3 days before the examination; if you wear hard contact lenses, remove them 8 days in advance. No dilation is required.

Diagnostic Center: Pentacam, Sirius

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Aberrometry

This examination uses laser light rays to accurately diagnose visual defects without the subjectivity of subjective refraction in optometry. It measures the present refractive error and other optical defects called aberrations, which are converted into measurements through mathematical formulas to determine the appropriate treatment with the excimer laser. This system is known as a personalized treatment of visual defects. At Bogota Laser Ocular Surgery Center, we have three types of equipment to perform this examination, depending on the laser that will be used for the patient and the procedure defined by the ophthalmologist. These are Peramis, Idesing, and Wavefront.

Recommendations: If you wear soft contact lenses, remove them at least 3 days before the examination; if you wear hard contact lenses, remove them 8 days in advance. No dilation is required.

Diagnostic Center: Wavefront, I desing, Peramis

Pupillometry

It determines the pupillary size under three different light intensities to achieve a more precise refractive treatment design and determine if eye surgery is necessary. The examination is performed using Sirius, Peramis, or a Pupilometer.

Recommendations: If you wear soft contact lenses, remove them at least 3 days before the examination; if you wear hard contact lenses, remove them 8 days in advance. No dilation is required.

Diagnostic Center: Sirius,Peramis

Autorefraction

It provides a comprehensive analysis of visual defects (astigmatism, hyperopia, myopia, presbyopia, and keratoconus) under different pupil sizes, as well as the accompanying optical aberrations.

Recommendations: If you wear soft contact lenses, remove them at least 3 days before the examination; if you wear hard contact lenses, remove them 8 days in advance. No dilation is required.

Diagnostic Center: Autorefractómetro, Nidek, Autorefractor Visuref 100

Optical coherence tomography (oct)

OCT (Optical Coherence Tomography) is used in the early diagnosis of retinal diseases such as macular degeneration, macular hole, epiretinal membranes, and venous occlusions, among others. The eye is analyzed vertically, unlike other examinations that are viewed from the front, allowing for the visualization of different parts of the eye, including the cornea, macula, retina, and optic nerve. OCT enables the ophthalmologist to distinguish the different layers of the retina, and map and measure their thickness. It also provides a view of the anterior part of the eye, which is useful in diagnosing corneal diseases and as support in cataracts, astigmatism, hyperopia, and myopia surgeries. At Bogota Laser Ocular Surgery Center, we use Optovue OCT technology.

Recommendations: Corneal OCT and anterior chamber angle measurement do not require dilation. For macular and optic nerve OCT, please take precautions for your travel arrangements, ensure you have assistance, or do not drive. This examination requires reading, and the results will be available within 3 to 5 business days after the examination.

Diagnostic Center: Optovue OCT

Ocular biometry

This examination measures the length of the eye from the cornea to the retina, as well as the size of intraocular structures. It also calculates the corneal curvature and intraocular lenses.

Recommendations: No specific preparation is required. In some cases, anesthesia may be applied, but only if ultrasound is necessary.

Diagnostic Center: Lenstar Biometer, Contact Biometer

Dry eye analysis – keratograph

The analysis of dry eye is carried out using the Keratograph 5M topographer by Oculus, which is a versatile device equipped with a high-resolution color camera and multiple lighting systems. This advanced technology allows for a more precise assessment of tear quantity and quality. The dry eye analysis performed with the Keratograph 5M is a non-invasive test that does not require pupillary dilation or physical contact with the patient's eye, ensuring a comfortable experience.

The Keratograph 5M enables various studies to be conducted to evaluate different aspects of tear function and ocular health. These include tear meniscus height, tear film sensitivity and stability, lipid layer thickness, tear film dynamics, meibography test, and bulbar redness recording (hyperemia).

Recommendations: If you wear contact lenses, remove them before the examination, and avoid using any medication or artificial tears 2 hours before the test to avoid affecting the results.

Endothelial cell count

This crucial examination, known as specular microscopy, plays a vital role in various procedures, including the placement of phakic lenses for individuals with high myopia or keratoconus, as well as providing support in cataract surgery. By utilizing a laser beam, this examination scans the innermost posterior surface of the cornea, enabling the measurement and analysis of the number, size, and shape of the corneal cells.

The specular microscopy examination is the only analysis available for assessing corneal vitality and allows for determining and calculating the cornea's survival time without damaging its structure. The examination is performed with the Iconon Microscope Specular.

Recommendations: No dilation is required.

Air tomography ora

It determines whether a cornea has sufficient strength to withstand ophthalmic surgery and helps select the appropriate technique for astigmatism, hyperopia, keratoconus, or presbyopia surgery. The equipment delivers an air pulse to the cornea and measures its displacement using two infrared cameras. It measures the corneal resistance factor and corneal hysteresis.

Verion

This examination, known as the Verion Imaging System combined with ORA technology, is used in cataract or phacorefractive surgery to improve the calculation of the intraocular lens, particularly in cases involving astigmatism. By utilizing this system, the accuracy of calculations and interventions is enhanced, to achieve consistent astigmatism correction. The procedure takes into account various variables that can impact refractive outcomes and may involve the use of arcuate incisions and/or toric intraocular lenses.

ORA

Intraoperative aberrometer used in cataract surgery, allowing for greater precision in preoperative calculations.

Contrast vision

This special examination objectively assesses the eye's ability to perceive minimal differential characteristics of color intensity and correlates them with other examinations to achieve more accurate treatments and evaluate results after correction.

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