Optical coherence tomography
Optical coherence tomography
Optical coherence tomography (OCT) is a diagnostic technique, by which it is possible to detect eye diseases at very early stages of their progress. Often, when doing OCT examinations, the eye disease is diagnosed for a patient who seemingly has no complaint of visual and eye health. Frequently effective treatment at the onset of a disease contributes to the highest expected and reachable result.
As a result of OCT measurement it is possible to obtain high resolution image in the examinations of front part of eye - cornea, opening of angles of anterior chamber, iris, sclera, conjunctiva, as well as of back part – retina and choroid.
Due to the fact that diagnostic device allows obtaining images with non-dilated pupil or slightly dilated pupil, the procedure is quick and painless; it is possible to perform eye examinations in patients with diabetes, glaucoma, neurological, cardiovascular diseases, in children and the elderly.
The exam is fast (3 minutes), safe, ease and patient friendly. The obtained scans, images and examinations are available immediately. When examining repeatedly, it is possible to compare the dynamics. The device is unique in that the image is created by a laser beam. Consequently, the method is comfortable for both the patient and the physician, since, during examination, the eyes are not dazzled. During the examination, the automatic re-scan function and eye tracking function adapt to changes in the condition and movements of eye; this is a very important aspect in patients with poor eyesight or poor gaze fixation.
Advantages of OCT diagnostic:
- examination is fast – only 3- minute procedure;
- non-invasive, contrast media are not used;
- high resolution images;
- allows obtaining images of optic nerve and retina at the same time, in the centre and periphery;
- allows obtaining images with non-dilated or slightly dilated pupil;
- eyes are not dazzled, light flash is significantly smaller and much more friendly for physician and for patient;
- the automatic re-scan function and eye tracking function adapt to changes in the condition and movements of eye; this is a very important aspect in patients with poor eyesight or poor gaze fixation;
- this device can be also used for examinations if the optic medium of the eye is cloudy (for example, in case of cataract);
- OCT examination allows diagnosing the diseases at their early progressing stages and starting timely treatment.
OCT examination shall be performed:
- for patient with elevated eye pressure for early glaucoma diagnosis;
- for patient for which it is difficult to correct vision with glasses or lenses;
- of great importance for diabetic patient – by the use of OCT the early diabetic retinal changes can be detected even if visual impairment has not been detected in patient and the ophthalmoscopic findings are within the normal limits;
- for patient with a high degree of nearsightedness or farsightedness, as often in such cases, the peculiarities of the optic nerve and retina are detected;
- for wearer of contact lenses to control corneal health and fit of the lens to the eye;
- for patient with amblyopia to specify the structure and extent of a birth defect (of retina, cornea or optic nerve);
- for patient with changes in optic nerve and / or retina;
- for elder patient;
- for patient with neurological disease;
- at ischemic lesions (angina pectoris, stent patients );
- if the patient has a low hemoglobin level;
- if the patient tends to have high blood pressure;
- for patients with oncology diseases.