Mariotte blind spot

…That is, the visual sensitivity is extremely good where the line of sight is like a spire, and at about 15 degrees to the outside, there is a vertical hole, which slopes gently from the center to the periphery, then becomes steep like a cliff, and finally the visual sensitivity becomes zero as if it is submerged in the sea. The vertical hole near the spire is called the Mariotte blind spot (or simply the blind spot), and corresponds to the optic disc, which is missing photoreceptors. Clinically, this three-dimensional image is represented in plan and cross-section, the former of which is mainly measured with a Goldmann perimeter, and the latter with a Tübinger perimeter. …

*Some of the terminology that mentions "Mariotte blind spot" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…すなわち，視線に当たるところは尖塔のように視覚感度はとびぬけて良好で，その外側15度付近には垂直の穴があり，中心から周辺に向かってなだらかに傾斜し，やがて断崖のようにきりたって，最後は一気に海中に没するように視覚感度は0となる。尖塔付近の垂直の穴が，マリオット盲点Mariotte blind spot(単に盲点ともいう)と呼ばれるものであり，視細胞が欠けた視神経乳頭部に対応する。臨床的には，この立体像は平面図と断面図で表現され，前者は主としてゴールドマン視野計で，後者はチュービンガー視野計で測定される。…

※「Mariotte blind spot」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報