Yes, you have the option to change the zoom of the page according to your need. At the top right there is a Zoom dropdown that has ‘Page Width’ selected by default. Click on it to adjust the page zoom and get a closer look at the details.
Also, at the top left of the comment panel is a ‘toggle sidebar’ button. Clicking the button opens the slide panel at the left containing thumbnails of all the PDF pages in the document.