Зрачок и есть. https://yandex.ru/images/search?from=tabbar&text=%D1%81%D0%B8%D0%BC%D0%B2%D0%BE%D0%BB%20%D0%B2%D1%81%D0%B5%D0%B2%D0%B8%D0%B4%D1%8F%D1%89%D0%B5%D0%B3%D0%BE%20%D0%BE%D0%BA%D0%B0&p=3&pos=116&rpt=simage&img_url=http%3A%2F%2Fkartinkin.net%2Fuploads%2Fposts%2F2022-03%2F1646357353_56-kartinkin-net-p-vsevidyashchee-oko-kartinki-59.jpg&lr=213