 Tichifunga iyi ndima yepfungwa dzekatsi, ndeipi chiyero chechiedza chinogona kuona katsi dzemumba mukuenzanisa nekuona kwevanhu? Katsi dzinoona zvakanaka husiku uye dzinongoona pachikamu chimwe chete chechitanhatu mwero wechiedza chinodiwa pakuona kwevanhu.: 43 Ichi chikamu mhedzisiro yemaziso ekitsi ane tapetum lucidum, inoratidzira chero mwenje unopfuura nepakati retina uchidzokera muziso, nokudaro zvichiwedzera kunzwisiswa kweziso pakudzima chiedza. Vana mahombe chigadziriso chekudzima chiedza. Katsi yepamba ine slit pupils, iyo inoibvumira kutarisa kupenya kwakajeka pasina chromatic aberration. Pachiedza chakadzikira, vana vekatsi vanokura kuti vavhare nzvimbo zhinji dziri pachena dzemaziso ayo. Katsi yemumba ine kutadza kuona kwemavara uye marudzi maviri chete emaseru ekoni, akagadziridzwa kuti anzwe bhuruu uye yero yegirini; kukwanisa kwayo kusiyanisa pakati petsvuku negirini ishoma. Mhinduro kumasaisai epakati kubva kune imwe system isiri masero etsvimbo inogona kunge yakakonzerwa nerudzi rwechitatu rwekoni. Izvi zvinoratidzika kuve kuchinjika kune yakaderera mwenje mwero pane kumiririra yechokwadi trichromatic chiratidzo. Makati zvakare ane nictitating membrane, achivabvumira kubwaira pasina kutadzisa kuona kwavo.Katsi dzemumba dzinokwanisa kuona pachikamu chimwe-chitanhatu mwero wechiedza unodiwa pakuona kwevanhu. 