Nota: A tradução desta entrada está atualmente em revisão de qualidade, portanto parte do conteúdo é exibida temporariamente apenas em inglês.
Este verbete ainda não foi traduzido para o seu idioma, portanto o original é exibido abaixo.
optic disc
This term is a precise anatomical designation used primarily in medical and clinical contexts. It refers to the physiological blind spot of the eye, as no photoreceptors are present where the optic nerve departs the retina. In a clinical setting, the appearance of the disc—specifically its color, shape, and the clarity of its margins—is a critical diagnostic indicator for systemic conditions like papilledema or glaucoma.
Because it is a specific anatomical structure, it is typically used in technical descriptions of ocular health. While "optic disc" is the standard term for the physical structure, "blind spot" is the common layperson's term for the resulting visual phenomenon.
Meanings
Examples
The doctor used an ophthalmoscope to examine the optic disc.
Swelling of the optic disc can be a sign of increased intracranial pressure.
The optic disc is the point where the axons of the ganglion cells gather.
I need to check if there is any cupping of the optic disc.
Because there are no photoreceptors at the optic disc, it creates a blind spot.
The patient shows significant pallor of the optic disc in the left eye.
Look closely at the image to see where the blood vessels converge at the optic disc.
Is the margin of the optic disc clearly defined in this scan?