Kan mit hmuhna tichaktu mit nerve chungchang hi kan hriat chian tur em ni?

He thuziak hi engtin nge i chhiar? I chhehvêla khawvêl thil mawi tak tak, i hmangaih tak takte hmêl chu engtin nge i hmuh? Heng zawng zawng hnuaiah hian kan mit leh kan thluak inzawmna mak tak a awm a. Chu inzawmna siamtu ber, ‘data cable’ ang maia hnathawk chu optic nerve, a nih loh leh optic nerve . Vawiin hian he thu hi han sawi mai ila.

Optic Nerve hi eng nge ni tak tak?

A awlsam zawngin, optic nerve hi nerve fiber maktaduai tam tak inzawmkhawm a ni a, electrical wire tam tak atanga siam cable ang mai a ni. Heng nerve te hi kan mit hnunglam atanga intan a, kan thluak nen direct in an inzawm a ni.

Hei hi hei hi engtin nge a thawh tih ngaihtuah awlsam ber a ni.

• I mit chu camera ang mai a ni.
• Mit hnung lama awm retina hi he camera-a sensor ang hi a ni. Eng a hmuchhuak a, kan thil hmuh chu electrical signal-ah a chantir thin.
• Optic nerve hi camera leh computer thlunzawmtu cable ang a ni. Chu chu retina-a electrical signal lo chhuakte chu he mit nerve kaltlangin thluak an tih ‘computer’-ah a kal a ni.

Hei hi kan thluak nena inzawm tlat cranial nerve 12 zinga pahnihna a ni. Mahse hei hi chu nerve dang nen chuan a danglam deuh hlek. A chhan chu, kan Central Nervous System (CNS) , chu chu thluak leh ruhro (spinal cord)-a tel anga ngaih a nih vang a ni. Cranial nerve dangte chu Peripheral Nervous System (PNS) -a mi an ni.

He optic nerve hi khawiah nge a awm?

Heng nerve pahnih, i mit hnung lama intan a, i thluak thlenga kal te hi an zinkawng hi a buaithlak deuh a ni. Khualzinna chu a bul berah chuan hetiang hian a kal a ni:

1. Optic Canal: Pakhatnaah chuan he nerve hi ruh atanga siam tunnel te tak te, optic canal an tih hmangin kan lu ruh chhungah a lut a.

2. Optic Chiasm: Luruh chhungah hian Y-shaped junction a awm a, chutah chuan mit pahnih atanga nerve te chu an inhmukhawm a. Hetah hian thil mak tak a thleng a. Mit dinglam atanga nerve fiber thenkhat chu vei lamah an inthlak a, mit veilam atanga nerve fiber thenkhat chu dinglamah an inthlak bawk.

3. Thluak: He junction hnu hian nerve fibers te hi visual cortex , thluak hnung lama hmun pakhatah direct in an kal a. Hei hi "picture" anga kan hmuhte kan hrilhfiah leh kan thlirletna hmun a ni. He nerve transfer hian mit pahnih atanga thlalak te chu 3D image pakhat, chiang takah kan dah khawm thei a ni.

Vision tih loh chu hna dang a awm em?

Ni e, a dik tak zet. Thluak lam panna kawngah chuan heng nerve fiber te hi hmun dangah a branch chhuak thin. Hengte hi thil dang atan a pawimawh ber a ni:

• Pupil Reflexes: Ni êng êng takah i luh thut chuan i mit pupil chu a lo tlem nghal mai ang tih han ngaihtuah teh. Tin, pindan thim takah i luh chuan a lian chho zel bawk. Hei hi mit chhunga êng lut zat control nan a thleng thin. Hetiang thil hi a thleng thuai a ngai a, chuvang chuan a tana signal chu chu nerve fiber inthen darhtute chuan an thawn chhuak thin.
• Accommodation Reflex: I hmaa lehkhabu i en a, rang taka thing pakhat i en chuan thing chu a fiah zawk thin. Hei hi a chhan chu mit chhunga lens awm dan a inthlak a, chu chuan thil hla tak leh hnai tak takah pawh a focus thei a ni. Hetiang kalphung hi optic nerve pawh hian a thunun thei a ni.
• Circadian Rhythm: A awlsam zawngin sawi ila, hei hi kan taksa ‘biological clock’ a ni. He darkar hian kan mut hun te, kan harh hun te, kan taksa lum leh vawt leh thisen sang inthlak dan te, ni khat chhunga hun hrang hranga a inthlak dan te a thunun a ni. Optic nerve hmanga thluaka êng kal chungchanga hriatna chuan he darkar hian ni leh zan a thliar hrang thei a ni.

Optic nerve tichhe thei dinhmunte chu engte nge ni?

Vanduaithlak takin he nerve hlu tak tichhe thei damdawi lam thil engemaw zat a awm a. Ṭhenkhat chu a hnuaia table-ah hian tarlan a ni.

Optic nerve problem symptoms tlangpui

Optic nerve-ah harsatna a awm chuan symptom hrang hrang a awm thei. Chûngte chu hun eng emaw chen emaw, a awm reng emaw pawh a ni thei.

A lan chhuah dan tlangpui thenkhat chu:

• Mit hmuh a fiah lo.
• Rangkachak hriat harsa emaw, rawng hrang hrang hmuh harsat.
• Mit hmuhna hmuna hmun dum emaw, gap emaw hmuh (Blind Spots) .
• Mit na, a bik takin mit tihchet hian.
• Vawi khata thil pahnih hmuh (Double Vision / Diplopia) .
• Mit hmaa êng eng chhuak hmuh (Photopsias) .
• Peripheral vision a tlahniam.
• Mit hmuhna tlahniam nghal emaw, a hloh vek emaw.

Engtin nge kan mit nerve hi kan humhim theih ang?

He nerve hlu tak leh kan vision venhim nan hian thil tam tak kan tih theih a ni.

• Mit enfiah fo rawh: Glass vuah a ngai lo a nih pawhin kum khatah vawi khat tal mit enfiah hian glaucoma ang natna te chu a hmain a hriat theih nan a pui thei a ni.
• Taksa rihna hrisel tak vawng reng rawh: Taksa rihna control hi hriselna zawng zawng tan a \angkai bakah mit tan pawh a \angkai hle.
• Ei leh in inthlau tak ei: Nerve hrisel atana pawimawh vitamin (a bik takin B vitamin) leh mineral (e.g. copper) awmna ei tur ei thin ang che.
• Natna dang control: Diabetes emaw thisen sang emaw ang chi natna i neih chuan doctor thupek angin control tha rawh.A pawimawh hle mai. Heng natnate hian mit leh mit (optic nerve) nasa takin a tichhe thei a ni.
• Meizial zuk loh tur: Meizial leh zuk leh hmuam thil dang hman hian mit nerve-a thisen pe chhuaktu thisen kalna kawng nalh tak takte chu a tichhia a ni.
• I mit leh lu venghim rawh: Infiamna i khelh lai te, machinery i hman lai te, leh bicycle i khalh dawnin helmet leh safety goggles vuah thin ang che.

Engtikah nge Doctor ka hmuh ang?

I mit hmuh danah zawi zawiin a danglam tih i hriat chuan, i mit na a, i mit a fiah lo tih i hriat chuan a rang thei ang bera doctor emaw mit lam doctor emaw pan rawh.

Amaherawhchu, mitthla danglam thut emaw, mit hmuhna hloh emaw i tawn chuan ngaihthah suh. Medical emergency a ni thei bawk. Damdawi in hnai ber Emergency Department (ETU) ah kal nghal rawh.

He kan mit leh kan thluak, optic nerve inzawmna mak tak hi kan ngaihthah fo thin a ni. Mahse he nerve hrisel taka vawn hi kan nun mawina kan hlim theih nan a pawimawh hle. I mit hmuh chungchangah ngaihtuahna i neih chuan doctor hnenah chu chu sawi hreh ngai suh.