Four mirrors plus a central axis view give a complete view of the interior of the eye. Unique depth dots mark each mirror at the base for easy orientation. One dot, 62 degrees(anterior chamber angle); two dots, 67 degrees (ora serrata); three dots, 76 degrees (mid-equator); four dots, 80 degrees (mid-peripheral area). The mirrors provide fields of view that overlap completely. Gonio mag .80x. Open Product Data Sheet



