BIOMIKROSKOPIYAI CHASHM, usuli tadqiqi sokhtori optikii chashm (qarniya, hujrai pesh, zujojiya, gavharak, jismi shishamonand). B. ch. bo yorii asbobi makhsusi optiki, ki az manbai rushnoii tez va mikroskopi binokulyari iborat ast, amali gardonda meshavad. B. ch. baroi oshkor sokhtani illathoi khurdtarini chashm, jismhoi khurdi begona va bemorihoi on imkoniyati musoid faroham meorad. B. ch. khususan baroi tashkhisi keratit, iridosiklit, katarakta va g. muhim ast.