Izindlela zokuphila zesimanje zibeka ingcindezi enkulu emehlweni. Kusukela kuma-smartphone nama-laptop kuya ekukhanyeni kokwenziwa kanye namahora amaningi okusebenza, ukuchayeka esikrinini nsuku zonke sekuyinto engenakugwenywa ezigidini zabantu emhlabeni jikelele. Ngenxa yalokho, ukukhathala kwamehlo kanye nokungakhululeki kokubona sekuba yizinto ezivame kakhulu ukukhathazeka. Ngenxa yalokhu, abantu abaningi manje bahlola ubuchwepheshe bezempilo njengokwelashwa kokukhanya okubomvu ukusekela induduzo yamehlo kanye nokuphila kahle kokubona.
Ukwelashwa ngokukhanya okubomvu kusetshenziswa kabanzi ezikhungweni zempilo, ezindaweni zokuphumula, ezindaweni zokuvuselela, kanye nasezikhungweni zobuhle ukuze kuphumuzwe futhi kugxilwe ekuvuseleleni. Ukwelashwa kusebenzisa ubude obuthile bokukhanya okubomvu kanye nokukhanya okuseduze ne-infrared ukusekela izinqubo zemvelo zebhayoloji emzimbeni. Ngokungafani nokukhanya kwe-ultraviolet okusetshenziswa kubuchwepheshe bokushiswa kwesikhumba, ukwelashwa ngokukhanya okubomvu akuxhomekile ekuvezweni yi-UV.
Esinye isizathu esikhulu esenza abantu babe nesithakazelo ekwelashweni kokukhanya okubomvu kwamehlo ukuthi amehlo adinga amandla amakhulu eseli ukuze asebenze kahle. I-retina isebenza kakhulu futhi incike kakhulu emsebenzini onempilo we-mitochondrial. I-Mitochondria isiza ekukhiqizeni amandla e-ATP adingekayo ekusebenzeni kwamaseli, futhi abanye abacwaningi bakholelwa ukuthi ubude bamaza okukhanya okubomvu bungase busekele le nqubo yamandla emvelo.
Ukucindezeleka kwamehlo kwedijithali sekungenye yezinto ezivame kakhulu ezikhathazayo ngempilo yokubona namuhla. Ukuchitha amahora amaningi ugxile ezikrinini kungabangela amehlo akhathele, ukoma, ukubona okufiphele, ikhanda elibuhlungu, kanye nokungakhululeki. Abantu abaningi manje bafuna izixazululo zempilo ezingezona ezihlaselayo ukuze basekele ukuphumula ngemva kokuvezwa kakhulu esikrinini.
Izikhathi zokwelapha ngokukhanya okubomvu zivame ukuchazwa njengokuzola nokuphumula. Abanye abantu bafaka imikhuba yokwelapha ngokukhanya okugxile enhlalakahleni emikhubeni yokuzinakekela yansuku zonke, ikakhulukazi ngemva komsebenzi noma ukusebenzisa isikrini sakusihlwa. Ngenxa yokuthi ukucindezeleka nokukhathala kungabangela ukungakhululeki kokubona, ukuphumula ngokwako kungadlala indima ebalulekile ekududuzeni kwamehlo.
Enye inzuzo evame ukuxoxwa ngayo ukusekela ukujikeleza kwegazi. Ukugeleza kwegazi okunempilo kusiza ukuletha umoya-mpilo kanye nezakhamzimba emzimbeni wonke, kufaka phakathi izicubu ezihambisana nokubona kanye nokusebenza kwamehlo. Amaza okukhanya abomvu kanye nama-wavelength acishe abe yi-infrared avame ukuhlotshaniswa nokusekela ukujikeleza kwegazi kanye nomsebenzi wemvelo wamaseli.
Abanye ochwepheshe bezempilo nabo banesithakazelo endimeni yokuvezwa kokukhanya ekusekelweni kokuguga okunempilo. Njengoba abantu bekhula, ukusebenza kahle kwe-mitochondrial kanye nokukhiqizwa kwamandla eseli kwehla ngokwemvelo. Ngenxa yalokhu, ukwelashwa kokukhanya okubomvu kuyaqhubeka nokudonsela ukunaka njengengxenye yezingxoxo ezibanzi zempilo kanye nokulwa nokuguga.
Ama-wavelength aseduze kwe-infrared afana ne-850nm athandwa kakhulu ezinhlelweni zempilo zanamuhla ngoba angangena ajule ezicutshini. Uma ehlanganiswe nama-wavelength abomvu abonakalayo afana ne-660nm, avame ukufakwa ezinhlelweni zokwelapha ngokukhanya ezisetshenziswa emhlabeni jikelele.
Abantu bayakwazisa futhi ukuthi ukwelashwa ngokukhanya okubomvu ngokuvamile akudingi ukungenelela futhi kulula ukukuhlanganisa nendlela yokuphila yansuku zonke. Izikhathi zivame ukuba zikhululekile futhi azidingi isikhathi esiningi sokuphumula, okwenza zifaneleke kumashejuli amatasa agxile enhlalakahleni nasekululameni.
Ngesikhathi esifanayo, ukuphepha kwamehlo okufanele kubalulekile. Abantu kufanele bagweme ukubheka ngqo imithombo yokukhanya enamandla ye-LED ngaphandle kwesiqondiso sochwepheshe. Izikhungo eziningi zempilo yochwepheshe zisebenzisa izinhlelo ezilawulwayo futhi zincoma izibuko zokuzivikela ngesikhathi sokwelashwa.
Kubalulekile futhi ukugcina amathemba angokoqobo. Ukwelashwa ngokukhanya okubomvu akuhloselwe ukuthatha indawo yokwelashwa kwamehlo kwezokwelapha noma ukwelapha izinkinga zokubona. Noma ubani obhekana nokushintsha kokubona okuqhubekayo, ubuhlungu obukhulu bamehlo, noma izimpawu zesifo samehlo kufanele axhumane nochwepheshe wokunakekelwa kwamehlo ngokushesha.
Esikhundleni salokho, abantu abaningi basebenzisa ukwelashwa kokukhanya okubomvu njengengxenye yemikhuba ebanzi yokuphila kahle egxile ekuphumuleni, ekululameni, kanye nokuzinakekela. Imikhuba enempilo njengokunciphisa ukucindezeleka kwesikrini, ukuthatha ikhefu njalo, ukugcina ubuthongo obufanele, ukuhlala unamanzi emzimbeni, kanye nokudla ukudla okucebile ngezakhamzimba kusalokhu kubaluleke kakhulu empilweni yokubona yesikhathi eside.
Esinye isizathu esenza ukwelashwa kokukhanya okubomvu kuqhubeke nokukhula ngokuthandwa ukuthi kulula. Izikhathi ngokuvamile ziyaphumula futhi kulula ukuzihlanganisa neminye imikhuba yokuphila kahle njengokuzindla, ukwelula, imikhuba yokululama, kanye nokulawula ukucindezeleka.
Izikhungo zempilo ezingochwepheshe ziya ngokuya zifaka izinhlelo zokwelapha ngokukhanya okubomvu okugcwele kanye nezinhlelo zokwelapha ngokukhanya okubomvu eziqondiwe ngoba abasebenzisi bayakwazisa indawo yokwelapha ekhululekile neyokuthula. Abantu abaningi babika ukuthi izikhathi eziqhubekayo zibasiza bazizwe beqabulekile ngokomzimba nangokwengqondo.
Ukungaguquguquki kungenye yezici ezibalulekile emikhubeni yokwelapha ngokukhanya okugxile enhlalakahleni. Ukuthuthuka kancane kancane kwenduduzo nokuphumula kuvame ukuhlotshaniswa nokusetshenziswa njalo isikhathi eside kunezikhathi zesikhashana.
Njengoba ukuqwashisa ngobuchwepheshe bezempilo obungangenisi umthelela kuqhubeka nokukhula emhlabeni jikelele, ukwelashwa ngokukhanya okubomvu kusalokhu kungenye yezindlela zokululama nokuzinakekela ezikhulunywa kakhulu ngazo. Kungakhathaliseki ukuthi kusetshenziselwa ukuphumula, induduzo yamehlo, noma ukwesekwa kwempilo jikelele, ukwelashwa ngokukhanya okubomvu sekuba yingxenye evamile yemikhuba yesimanje yokuphila enempilo.
Kubantu ababhekene nokucindezeleka kwamehlo nsuku zonke kanye nokukhathala okuhlobene nesikrini, ukwelashwa kokukhanya okubomvu kunganikeza isengezo esiphumuzayo nesigxile enhlalakahleni emikhubeni yokunakekelwa kwamehlo iyonke uma kusetshenziswa ngokucophelela nangokuzibophezela.
