1. A system (OKT12, OKT12 " ) for an optical measurement by means of optical coherence tomography (OCT), the internal dimensions of the inspected object (10), such as eyes (20), wherein the object (10) has an internal boundary (14, 14 , 14 ") in this section, which changes the refractive index, and the system configured to detect a portion of the incident radiation reflected and / or scattered by the said boundaries in the opposite direction, comprising: - at least one first OCT apparatus (Oct1) adapted with the ability to measure the internal ra steps in the first volume (17), which is a part of the object (10), and- at least one second OCT apparatus (OKT2) operable to measure the internal dimensions of the second screen (19), which is a part of the same object ( 10), wherein said second volume (19) at least partially different from said first volume (17) .2. System (OKT12, OKT12 " ) according to claim 1, characterized in that the said first volume (17) is located near or at the front side (16) of the object (10) facing the system, and said second volume (19) situated near or directly at the rear side (18) of the object (10) or extends substantially from the front side (16) of the object (10) to its rear side (18) .3. System (OKT12) according to claim 1, characterized in that: - the first OCT apparatus (Oct1) has a first channel (RA1) and comparing the first channel (SA1) of the sample, - the second OCT apparatus (OKT2) has a second channel (RA2 ) and comparing the second channel (SA2) of the sample at this- at least a first channel section (SA1) of the sample and at least a second channel section (SA2) directed toward the sample object (10) .4. System (OKT12, OKT12 " ) according to claim 1, Otley1. Система (ОКТ12-ОКТ12″′) для оптического измерения, посредством оптической когерентной томографии (ОКТ), внутренних размеров обследуемого объекта (10), например глаза (20), при этом объект (10) имеет внутренние границы (14, 14′, 14″) раздела, на которых изменяется показа
