Optical coherence tomography - Causes, Symptoms and Treatment .MF .
Optical coherence tomography - a method of eye tissues research, which allows in vivo to obtain an image using infrared radiation in a high spatial resolution.This method is more accurate and allows you to explore the eye tissue at a microscopic level, moreover it allows you to explore not only the morphological structure of the tissue, but also its functional state.He is like a biopsy, but there is no any interference in the body and, consequently, does not have the limitations that are inherent in the biopsy.Also undoubted advantage of optical coherence tomography is the speed of obtaining the result: the patient receives it immediately after the study.
essence of the method is to measure the time spent on the reflection of the light pulse from the tissue.Thus, it is possible to obtain a cross-section intravital tissues, two-dimensional and three-dimensional image of it.
prerequisite for optical coherence tomography is the transparency of optical media of the eye, ie,the absence of gross corneal sca
1. Any pathology of the central zone of the retina (the gap, edema, macular degeneration).
2. Stratification of the retina.
4. Pathology of the optic nerve.
5. Dynamic observation.
Contra Contra, this method has not, except for the inadequate behavior of the patient as a result of drugs or alcohol.Sometimes it is very difficult to apply this method of investigation in patients suffering from strabismus or nystagmus.
procedures special preparation for this study there.Sometimes it is necessary to expand the pupil of the patient, which is achieved by instillation of drops tropicamide or cyclopentolate.
patient sits in front of the machine, he puts his chin on a special stand, and he looks at the proposed label.
At this time, the doctor with the help of the machine to scan the necessary structures of the eye.The device produces black-and-white cut image, but for a more comfortable visualization denser structure painted red.MRI patients based on the database and on the basis of results of previous studies of this patient is able to analyze the result, it is able to assess the dynamics of the process or evaluate the efficacy of the treatment.
For some time after the procedure probably feeling some discomfort in the eyes, it is also possible tearing.
procedure takes an average of about 5 minutes.
Ophthalmologist Odnoochko EA