A ʻO ka pahu kiʻi fundus kahi microscope haʻahaʻa haʻahaʻa kūikawā me kahi pahu pahu i hoʻopili ʻia.Hoʻokumu ʻia kāna hoʻolālā optical i ka ophthalmoscope indirect.Hōʻike ʻia nā kāmela Fundus e ke kihi o ka nānā ʻana i ka angle optical o ka ʻae ʻana o ka lens.