Preparation
for exams
fluorescein angiography
It is an examination that is carried out at the bottom of the eye with an intravenous dye injection, which shows how the retina is anatomically and functionally, specifically the vascular irrigation.
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Submit a copy of the history or medical referral.
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Bring the creatinine result (if it was sent to you).
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Always come with a companion because it is done under pupil dilation.
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Do not suspend the medications you usually take and bring the formula or name of the same
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It does not require fasting, a light meal is recommended before the exam
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Be in comfortable clothes.
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Bring dark glasses to reduce the discomfort of light due to the dilated pupil.
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It cannot be done if there is an ongoing ocular infectious process or treatment.
Duration
20 minutes
Maximum availability
of time
2 hour
ocular ultrasound
It is an exam that by means of ultrasound evaluates the internal structures of the eye to determine its condition.
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Submit a copy of the history or medical referral.
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Suspend the use of contact lenses for a minimum of 3 days.
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It cannot be done if there is an ongoing ocular infectious process or treatment.
Duration
20 minutes
Maximum availability
of time
1 hour
eye biometry
Through this test, the length of the eye can be measured, allowing the power of the intraocular lens to be implanted inside the eye after cataract surgery to be calculated.
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Submit a copy of the history or medical referral.
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Suspend the use of contact lenses at least three days before or according to instructions given by the treating physician.
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It cannot be done if there is an ongoing ocular infectious process or treatment.
Duration
20 minutes
Maximum availability
of time
1 hour
Visual field or campimetry
Test that determines the width of the field of vision or visual field. It is mainly used in patients with suspected or diagnosed glaucoma.
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Submit a copy of the history or medical referral.
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Come rested, the exam should not be done in case of sleepiness, tiredness or difficulty concentrating.
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Bring the glasses (glasses) you use or the written formula.
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Do not be with the pupil dilated.
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It cannot be done if there is an ongoing ocular infectious process or treatment.
Duration
20 minutes
Maximum availability
of time
1 hour
Electrocardiogram
The electrocardiogram evaluates cardiac function through a recording of the electrical activity of the heart.
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Submit a copy of the history or medical referral.
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The patient must inform about the medication they are using since some medications can alter the result.
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Do not exercise before the test and be as relaxed as possible, since any movement can alter the record.
Duration
20 minutes
Maximum availability
of time
40 minutes
Electroretinogram and
electrooculogram
Test that serves to establish the function of some cells of the retina through their stimulation with lights or intermittent patterns.
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Submit a copy of the history or medical referral.
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Do not apply makeup on the face.
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Bring the glasses you wear.
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Always come accompanied because it requires pupil dilation.
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Bring dark glasses to reduce the discomfort of light due to the dilated pupil.
Duration
20 minutes
Maximum availability
of time
1 hour
clinical face photos
Photographic images of different planes of the face and eyes.
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Submit a copy of the history or medical referral.
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Come without makeup in the eye area.
Duration
20 minutes
Maximum availability
of time
40 minutes
conventional photos of eye fundus and wide field
Photographic images of the retina of the eye. They are taken with a retinal camera and are used to record pathologies or as a follow-up.
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Submit a copy of the history or medical referral.
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Always come with a companion as it is done with a dilated pupil.
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Discontinue the use of contact lenses.
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Bring dark glasses to reduce the discomfort of light due to the dilated pupil.
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It cannot be done if there is an ongoing ocular infectious process or treatment.
Duration
20 minutes
Maximum availability
of time
40 minutes
autofluorescence photos
Photographs of the retina with the OPTOMAP camera, through a color filter that allows specific evaluation of some structures.
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Submit a copy of the history or medical referral.
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Always come with a companion as it is done with a dilated pupil.
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Discontinue the use of contact lenses.
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It cannot be done if there is an ongoing ocular infectious process or treatment
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bring glassesCures to reduce discomfort to light due to dilated pupil.
Duration
20 minutes
Maximum availability
of time
40 minutes
Interferometry or PAM
It is an exam that determines the visual acuity that a patient could achieve after cataract surgery.
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Submit a copy of the history or medical referral.
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Always come with a companion because in some cases it is done with a dilated pupil.
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It cannot be done if there is an ongoing ocular infectious process or treatment.
Duration
20 minutes
Maximum availability
of time
40 minutes
pachymetry
It is an exam that determines the thickness or thickness of the cornea through ultrasound.
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Submit a copy of the history or medical referral.
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Suspend the use of soft contact lenses at least 3 days before and rigid contact lenses at least 8 days or according to medical criteria.
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Do not wear makeup in the eye area.
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It cannot be done if there is an ongoing ocular infectious process or treatment.
Duration
20 minutes
Maximum availability
of time
40 minutes
procedure with
argon laser
The argon laser is a light that produces photocoagulation of the tissues and is used especially to treat retinal pathologies such as diabetic retinopathy. It is also used in the anterior segment of the eye to cauterize some vessels and eyelash follicles. It is only performed by the ophthalmologist.
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It does not require fasting, a light meal is recommended before the exam.
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Come with a companion because in some cases the pupil dilates.
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Avoid applying makeup to the eye area.
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Bring dark glasses to reduce the discomfort of light due to the dilated pupil.
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It cannot be done if there is an ongoing ocular infectious process or treatment.
Duration
20 minutes
Maximum availability
of time
2 hours
Specular microscopy (endothelial cell count)
Test through which a count is made and the shape of the cells of the corneal endothelium (innermost layer of the cornea) is studied.
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Submit a copy of the history or medical referral.
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Suspend the use of contact lenses 3 days before.
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It cannot be done if there is an ongoing ocular infectious process or treatment.
Duration
20 minutes
Maximum availability
of time
40 minutes
pentacam
Examination that analyzes in detail the anterior segment of the eye.
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Submit a copy of the history or medical referral.
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Suspend the use of soft contact lenses at least 3 days before and rigid contact lenses at least 8 days or according to medical criteria.
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Do not wear makeup in the eye area
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It cannot be done if there is an ongoing ocular infectious process or treatment.
Duration
20 minutes
Maximum availability
of time
40 minutes
YAG procedure
laser and laser SLT
The YAG laser is a light that produces tissue breakdown by a mechanism called photodisruption. It is used in ophthalmology to make small holes in the iris called iridotomy or also in the posterior capsule of the lens called capsulotomy. The SLT or selecta laser is a variety of YAG laser used for the treatment of some pathologies such as glaucoma. During the procedure the patient receives a light that produces the described effect. It is only performed by the ophthalmologist.
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It does not require fasting, a light meal is recommended before the exam.
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Come with a companion because in some cases the pupil dilates.
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Avoid applying makeup to the eye area.
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Bring dark glasses to reduce the discomfort of light due to the dilated pupil.
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It cannot be done if there is an ongoing ocular infectious process or treatment.
Duration
20 minutes
Maximum availability
of time
1 hour
ODP (ocular path difference) scan.
Optical path difference difference scan
Examination that records the optics of the eye from the cornea to the retina by means of a scanner.
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Submit a copy of the history or medical referral.
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Suspend the use of soft contact lenses at least 3 days before and rigid contact lenses at least 8 days or according to medical criteria.
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Come with a companion because in some cases it is done with pupil dilation.
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Avoid applying makeup to the eye area.
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Bring dark glasses to reduce the discomfort of light due to the dilated pupil.
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It cannot be done if there is an ongoing ocular infectious process or treatment.
Duration
15 minutes
Maximum availability
of time
40 minutes
visual evoked potentials
It is a test that records eye activity in the brain.
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Submit a copy of the history or medical referral.
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Bring the glasses you use or the written prescription.
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Children under 5 years of age or with cognitive disabilities bring them drowsy to take the exam while asleep.
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Bring very clean hair without hairspray or gel to facilitate the adhesion of the electrodes.
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Avoid makeup on the face.
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It cannot be done if there is an ongoing ocular infectious process or treatment.
Duration
20 minutes
Maximum availability
of time
2 hours
OCT (optical coherent tomography or tomography
optical coherence)
It is a diagnostic method that allows obtaining high-resolution images of different intraocular structures.
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Come with a companion because in some cases it is done with pupil dilation.
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Avoid applying makeup to the eye area.
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Bring dark glasses to reduce the discomfort of light due to the dilated pupil.
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In anterior segment OCT to evaluate contact lenses, you must wear them.
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It cannot be done if there is an ongoing ocular infectious process or treatment.