Diagnostic ImagingBook your appointment online
Clínica Barraquer is a company that stands by it’s offer of diagnostic support services for different specialties and subspecialties of ophthalmology.
To schedule your exam in the Central Scheduling (57-1) 218 88 87
Monday to Friday from 7:30 a.m. to 5:30 pm
Saturdays from 8:00 a.m. to 1:00 pm.
Angiography is a diagnostic test that studies the behavior of circulatory vessels located in the eye
It is performed to diagnose diseases or problems in the retina. This procedure is necessary to inject a contrast medium for photographic images. The test can be done with two different substances (contrast media - dyes), Fluorescein Sodium to see the vascular system of the retina or indocyanine green to analyse the vessels of the choroid (layer overlying the retina). The test requires prior pupillary dilation and the procedure lasts for 20 minutes with fluorescein and an hour and a half with indocyanine.
ANTERIOR SEGMENT ANGIOGRAPHY
It is done for diagnosis of pathology of Iris and Cornea corneoscleral limbo. It is necessary to inject as Sodium Fluorescein dye for photographic images. It can be performed without pupil dilation.
OPTICAL COHERENCE TOMOGRAPHY (OCT)
Procedure for computerized photographic images of the tissue around the Optic Nerve. It is done to get the measure of the thickness of the Nerve Fiber Layer and the relationship Cup / Disc in patients with glaucoma or suspected disease. Analysis is also 360 ° of the macula for people with retinal diseases. This procedure uses a principle similar to ultrasound. In some cases requires dilation, and the test takes 10 minutes.
Electrophysiological tests of vision plays a very important role in the diagnosis of diseases of the retina, optic nerve and visual pathways. There are four tests that are performed in this field, the electroretinogram (ERG), the Electrooculogram (EOG), Occipital Evoked Potentials (POE) and Pattern Electroretinogram. This combined set of tests help determine, at any given time, at what level between the retina and the brain (occipital cortex) is damage or pathology of the visual system.
ELECTRORETINOGRAM AND ELECTROOCULOGRAM
The electroretinogram (ERG) and the Electrooculogram (EOG) are useful tests for the diagnosis of retinal dystrophies (Dist. of cones, Retinitis Pigmentosa, Enf. Stargardt, Dist Vitelliforme), choroidal arteofias (artrofia gyrata, Coroidermia), degenerations Vitreo-retinal (Juvenile retinoschisis, Enf. Stickler), inflammatory conditions, circulatory deficiencies (Artery occlusion and Central Retinal Vein, Diabetes), retinopathy toxic (drugs such as chloroquine, Phenothiazines, or substances such as methanol, etc.) and to detect the first signs of siderosis in cases of metallic intraocular foreign bodies.
EVOKED OCCIPITAL POTENTIAL
Reflect brain electrical activity corresponding to the individual's central visual field. Its Clinical application includes inflammatory disorders (such as optic neuritis, papillitis), demyelination (multiple sclerosis), circulatory (as Ischemic Optic Neuropathy) and post-traumatic visual pathways, and the determination of amblyopia. In combination with the ERG, this can predict the visual potential in children and in patients with clear media opacities (cataract, vitreous hemorrhage, etc.).
In addition to helping patients detect simulators. For cases of young children and patients unable to cooperate with the examination are available spectacles having intermittent light stimuli, as a Light Emitting Diode (LED), which allow light stimulation of the retina even with the eyelids closed.
Examination measures different spaces and the eyeball lens: Curvature corneal thickness and corneal diameter, anterior chamber depth, axial length of the eyeball. It is essential to calculate the intraocular lens power. It can be performed with various instruments: optical, ultrasonic probe or laser.
Diagnostic test is performed to check the integrity of the optic nerve fibers on their journey from the eye to the occipital cortex of the brain. To perform this procedure requires the best corrected vision and it is often necessary to place a contact lens on the eye to be examined with the aid of anesthetic drops. The exam duration is 15 minutes for each eye.
SPECULAR ENDOTHELIAL MICROGRAPHY
A count of Endothelial Cells through Specular Microscopy. It is a procedure through which a photograph is possible to count the cells that are in the corneal endothelium per square millimeter, analyse their shape and size. It requires no previous dilation and runs for 5 minutes.
MICROPERIMETRY LASER (SLO)
Topographically measured threshold sensitivity to light projected in a specific area: The Macula and Fovea, being able to determine the defects in the central vision caused by certain diseases and the extent of involvement. It is done in cases with retinal pathology - examination lasts 20 minutes and requires pupil dilation.
Instant photography is a mirror reflection on the cornea of a Placido ring. It is useful for determining the apex of the cornea, the visual axis, the line of sight, the orientation of the astigmatism and the possible irregularities of the corneal surface. Applications can be preoperative and postoperative Refractive Surgery, Corneal Transplant and any other corneal pathology.
This is a Fundus photograph. It is used to track retinal pathologies and patients with glaucoma or suspected of this disease, in order to chart the changes that may occur in both the macula and in the Optic Nerve. This photograph may be in color and / or Black & White.
These are diagnostic impressions and biometrics. This is a procedure by which we analyse the anatomical components of the eye and orbit, takes place at the level of the anterior segment with a high frequency probe.
COMPUTERIZED CORNEAL TOPOGRAPHY
This is a computer analysis of the corneal surface, measuring the curvature and reports on individual characteristics and irregularities. As a diagnostic method is universal, but in refractive surgery patients is specific to laser system that is used in the clinic, because it gives the laser the information it requires to make a customized ablation. To do this requires suspending the use of soft contact lenses for 2 to 3-days and 8-15 days gas permeable lenses.
CORNEAL TOPOGRAPHY WITH RECESS
The computer analysis of the optical surfaces of the eye, cornea (anterior and posterior surface) - corneal thickness - Densitometry corneal diameter; Anterior Chamber and Angle, Surface Front and lens densitometry. It is a universal diagnostic method. It is used for diagnosis, prognosis and evaluation Anterior Segment Ocular globe. It lasts five minutes and to realize it is required to suspend the use of soft contact lenses for 2 to 3-days and 8-15 days gas permeable lenses.
MICROPERIMETRY LASER (SLO)
Topographically measured threshold sensitivity to light projected in a specific area: The Macula and Fovea, being able to determine the defects in the central vision caused by certain diseases and the extent of involvement. It is done in cases with retinal pathology - examination lasts 20 minutes and requires pupil dilation