OCT EXAMINATION (OPTICAL COHERENCE TOMOGRAPHY) OF THE RETINA AND THE ANTERIOR SEGMENT OF THE EYE
With the OCT examination, the individual layers of the retina can be displayed and many diseases such as age-related macular degeneration (AMD), vascular disorders or glaucoma can be detected.
During the examination, the retina is scanned with a laser beam. The reflections of the light signals on the various retinal structures are measured and converted into high-precision, detailed images and displayed by a computer. The high accuracy of the OCT examination gives a real insight into the retinal layers and thus makes changes visible at an early stage.
The structures of the anterior segment of the eye can also be examined with a special OCT examination. Changes in the cornea, iris or lens can be precisely displayed and diagnosed.
The OCT examination takes only a few seconds, is non-contact and has become an important diagnostic tool for ophthalmologists due to its high level of precision.
VISUAL FIELD EXAMINATION (PERIMETRY):
Changes and defects in the field of vision are important indicators of various diseases of the eye (e.g. damage of the optic nerve damage in case of glaucoma) or the brain (e.g. after a stroke). With the visual field test you can see whether you can still see all around or your field of vision is already restricted. Incipient visual field restrictions, minor defects and a slight deterioration in vision can occur so slowly with some diseases that you do not notice these changes yourself. In this case, regular check-ups of the visual field are absolutely necessary.
PHOTOGRAPHY OF THE ANTERIOR AND POSTERIOR SEGMENTS OF THE EYE
A fundus camera (retinal camera) is used to take pictures of the posterior segment of the eye (retina). The slit lamp camera can document parts of the anterior eye segment (lids, conjunctiva, cornea), as well as the iris, anterior chamber and lens.
The pictures support the diagnosis, make pathological changes visible and document them.
OPTICAL BIOMETRY
During cataract surgery, the clouded human lens is replaced with a clear intraocular lens. For this purpose, a precise eye examination is carried out before surgery, as well as an exact measurement and calculation of the lens to be implanted with optical biometry.
To determine the power (diopters) of the new intraocular lens, we need a precise measurement of the corneal curvature, anterior chamber depth, lens thickness and axial eye length.
The lens calculation can be carried out as precisely as possible with the latest technology, so that you ideally need no spectacles glasses for distance vision, for example.
CORNEAL TOPOGRAPHY
Corneal topography is a high-precision imaging device of the cornea. A map of the corneal surface is created using computer-aided analysis methods.
Corneal topography serves to identify or monitor the course of pathological changes in the cornea. It is also performed before operations that change the overall refractive power of the eyes (cataract surgery, refractive surgery).
COLOR SENSE EXAMINATION OF COLOR SENSE
Humans are able to perceive thousands of color nuances. Color perception takes place in the retinal cones mainly located in the fovea.
All tones of color can be produced in the eye by mixing the three colors red, green and blue. If the sensitivity to one or more of these colors is reduced, the sense of color will be disturbed.
The most common color vision disorder is the congenital red-green disorder. Up to 8 percent of men and 0.4 percent of women are affected by a red-green disorder. Most of the time, those affected do not even notice the color vision disorder because it is present from birth. A weakness or loss of blue-yellow vision is much rarer.
Congenital color vision disorders can be expressed either in a total inability to perceive a particular color or in a weakness in perceiving those colors.
Color charts (pseudo-isochromatic charts according to Ishihara) are used to determine disorders of the color sense. This can be used to determine the presence of a red-green disorder.
The examination of color sense is necessary for certain aptitude tests (e.g. boat license).
