This is the 16657th most frequent Russian word.
сетчатки
Retinas.
In this sentence, 'сетчатки' refers to the biological retina, providing lexical context as a noun in the genitive case, related to the organ in the eye.
Доктор сказал, что сетчатки глаза нужно беречь от прямых солнечных лучей.
The doctor said that the retina of the eye needs to be protected from direct sunlight.
Here, 'сетчатки' is used in the feminine plural nominative form, referring to multiple retinas, showing its application in scientific study and context.
Сетчатки биологических образцов были тщательно изучены под микроскопом.
Retinas of biological specimens were carefully studied under a microscope.
In this case, 'сетчатки' in the singular genitive form specifies the object of the diagnosis, showing its relevance in medical research and device development.