Zanah hmuh hi a chhe em? Zan lama hmuh theih (Scotopic Vision) chungchang han sawi ila

Ni chhuahna hmunah i awm tawh a, pindan thim takah, entîr nân, movie theater-ah i lut thut mai ang tih han ngaihtuah teh. A nih loh leh zan lama kawtthlera i kal lai, khawnvar awm lohna hmuna i kal lai hian i chhehvêl hmuh nân hun rei tak a ngai a ni lawm ni? Chu chu night vision kan tih chu a ni a, a nih loh leh damdawi lam tawngkam chuan , scotopic vision . Hei hi kan mit thiltihtheihna mak tak a ni.

Engtin nge he zan inlarna hian hna a thawh?

Hei hi kalphung ngaihnawm tak a ni. A awlsam zawngin camera hnathawh dan ang deuh a ni. Hei hian engtin nge hna a thawh tih i lo en ang u.

Hmun eng tha takah i awm a\angin hmun thim takah i kal ta tih han mitthla teh.

1. Mit mitmeng a lian: Thil thleng hmasa ber chu i mit lai takah a dum, mitmeng , chu a lian a, a theih ang anga êng a luh theih nan. Camera lens magnify ang mai a ni.

2. Retina-ah êng a lut: Hetianga mit chhunga êng lut hian mit hnung lama screen ang deuh, retina an tih hmun chu a rawn deng a.

3. Special cells te hian hna an thawk tan: Retina ah hian êng laka sensitive special cell maktaduai tam tak a awm a. Hengte hi photoreceptor kan ti a . Chungte chu chi hnih a ni.

• Cones: Hengte hian êng tha takah rawng kan hmu thei a.
• Rods: Kan thawnthua mi huaisen te chu hetiang hi an ni. Heng ``rods`` te hi êng tlem, chu chu zan lama kan hmuh theihna tura min puitu cell te an ni.

4. Chemical process a intan: Thim i luh hnuah minute tlemte chhungin i rod cell-a protein rhodopsin an tih chu a thawk tan ta a ni. Hetiang zawng zawng hi minute 30 vel a ni a, thimah chuan i theihtawp chhuahin i hmu thei a ni. Thim zingah rang taka i hmu thei lo tih i hre tawh em?

5. Thuchah chu thluak lamah a kal a: Activated rod cells te hian he light level hniam tak hi electrical signal ah an chantir a, optic nerve hmangin thluak ah an thawn thin

6. Thluak hian image a siam: A tawp berah chuan i thluak hian heng signal te hi a letling a, thim zinga i hmuh image chu a siam ta a ni.

Zan lama mit hmuhna tichhe thei damdawi lam dinhmunte chu engte nge ni?

Zan lama kan mit hmuh dan hi kan mit (retina)-a rod awmte hriselnaah a innghat a ni. Chuvangin heng cell te tichhe thei thil eng pawh hian zan lama kan mit a tichhe thei a ni. Hetiang thil thleng thei dinhmun thenkhat chu hetiang hi a ni.

Engvangin nge rannungte hian keimahni aiin zanah an hmuh thiam zawk?

Hei hi mi tam takin harsatna an neih a ni. Rannung, ui leh ui ang chi te hian keini aiin zanah an hmu thiam zawk. Hei hi chhan lian tak pahnih a awm a.

1. Mit lian: Rannung mit leh mit (retina) te hi kan mit aiin a lian zawk a, chuvangin an mit hian eng a tlem lai pawhin eng tam tak a khawlkhawm thei a ni.

2. Luminescent membrane: Rannung mit (retina) hnung lamah hian tapetum lucidum an tih membrane a awm a. Hei hian darthlalang ang maiin hna a thawk a ni. Mit chhunga êng lut chu retina kaltlangin he membrane hi a tawk a, retina-ah a rawn lang leh ta a ni. Chu chu, êng chuan vawi khat ni lovin, retina chu vawi hnih a deng tihna a ni. Hei vang hian boruak thim takah pawh chiang takin an hmu thei a ni. Zanah êng a rawn eng chuan ui mit a eng chhuak tih i hmu ngai em? Chu chu he membrane `(Tapetum lucidum)` an tih vang a ni.

Engtin nge zan lama kan mit hmuh chu kan vawn that theih ang?

Kan mit hi thil hlu tak a ni. Chuvangin anmahni venhim hi kan mawhphurhna a ni. Zan lama i mit hmuh that theihna tura i tih theih thenkhat chu hetiang hi a ni.

• I mit enfiah fo rawh: Glasses i vuah lo a nih pawhin kum khatah vawi khat tal mit doctor hnenah i mit enfiah tir a pawimawh tho . Hetiang hian harsatna eng pawh chu a hmain hriatchhuah theih a ni.
• Health checkup kimchang nei rawh: Thisen sang leh zunthlum ang chi natna te hian i mit a nghawng nghal thei a ni. Chuvangin, i doctor tlawh fo la, checkup kimchang tak nei rawh.
• Sunglass tha tak ha rawh: Ni zung chak lo ultraviolet (UV) rays laka i mit ven nan 100% UV protection (UV400) nei sunglass bun la. Ni lam chu direct-in en suh.
• Meizial zu lo: Meizial hian i mit (retina)-a thisen kalna kawng nalh tak takte chu a tichhe thei a ni. Hei hian i light receptor cell te pawh a nghawng bawk.
• Ei leh in hrisel ei: Mit hriselna atan antioxidant tamna ei tur hi a pawimawh hle. Thei, thlai, legumes, leh thau hrisel tamna ei tur ei rawh.

Tunah chuan he thiltihtheihna mak tak, night vision tia koh hi i hre tawh hle a, chu chuan thimah kan kalna tur min zawng a, in chhunga kan kal theih nan min pui a ni. He theihna hi vawng nung tur chuan i mit enkawl hi a pawimawh hle. Zan lama i mit hmuh danah danglamna emaw, nuam lo emaw i neih chuan ngaihthah suh la, doctor thurawn la nghal rawh.