Kawngpuiah i kal laiin i hmaa car chu eng chen nge a hlat tih chiang taka ngaihtuah harsa i ti ngai em? A nih loh leh dawhkan chunga tui glass khat i kut i phar a, accident-in i tikehsawm ngai em? A nih loh leh, stairs i chhuk lai khan khawiah nge i ke tur tih chiang takin i hre thei lo pawh a ni thei. Hetiang thil hi a chang chuan kan chungah a thleng thei. A chhan ber chu kan mit hian thil pakhat hlat zawng, a lian zawng leh a thuk zawng dik taka a hriat theihnaah danglamna tlem a nei a, chu chu ‘depth perception’ an ti a ni.
Depth Perception chu eng nge ni?
A awlsam zawngin sawi ila, depth perception chu thil awmte chu dimension thum (3D)-a kan hmuh theihna a ni. Chu chu thil pakhat san zawng leh zau zawng chauh ni lovin, a thukzia te, kan laka a hlat zia te, a lian zia te hriatthiamna min pe a ni. Hei hi thil dang mai a ni lo, kan mit leh thluak hmun tam takin an tih dun hi thil mak tak a ni.
He thuziak hi i phone-ah i chhiar ang tih han ngaihtuah teh. Phone screen leh a chunga thuziak te hi a level inang lo, flat to you. Screen-ah thuziak chu a awm tih i hmu a, phone chu i kutah a awm tih i hmu bawk. Chu thilte chu dimension thum (3D)-a kan hmuh theihna tura min puitu chu depth perception kan tih chu a ni. Hetiang theihna hi awm lo se chuan khawvel kan hmuh zawng zawng hi thlalak flat ang maiin a lang ang.
Engvangin nge depth perception hi kan tan a pawimawh?
Hei hi thil mawi taka hmuh mai mai a ni lo. Kan nitin nun himna atan pawh a pawimawh hle .
- Motor khalh lai: He theihna hi hmalam lirthei atanga hlat zawng hriatthiamna atan te, kawngpui pelhtu tu emaw atanga hlat zawng hriatthiamna atan leh lirthei dah huna hmun a awm leh awm loh hriatthiamna atan a pawimawh hle.
- Kawngpuia kal lai: Hei hi stairs chhoh leh chhuk lai te, kawngpuiah khur awm lohna tur te, mipui zinga kal lai te a ngai a ni.
- Inkhelh laiin: Cricket khelh lai kha han mitthla teh. Ball lo lut tur kah hun tur te, ball tlan chak dan tur te, a man theihna tur hmun te dik taka hriat theih nan depth perception a ngai a ni.
A awlsam zawngin, he theihna hian kan hna zawng zawng deuhthaw-ah thil awmna hmun leh hlat zawng hriatthiamna min pe a ni.
He thil depth perception an tih hian engtin nge hna a thawh?
Hei hi a buaithlak deuh a, mahse a awlsam zawngin i dah ang u. Hei hi kan system ‘Visual Pathway’ tih a ni. Step tlemteah a thleng thin:
1. Mit chhunga êng lut: Pakhatnaah chuan kan thil hmuh atanga êng lo chhuak chu kan mitah a lut a.
2. Retina leh Optic Nerve: He êng hi mit hnung lama screen awm retina -ah a tla a, chu thu chu electrical signal-ah a chantir a ni. Chumi hnuah chuan heng signal te hi kan optic nerve ah a thawn chhuak leh thin .
3. Optic chiasm: Kan mit pahnih atanga optic nerve te hi thluak hmalam ah ‘X’ angin an inzawm khawm a. Hei hi an ti aOptic Chiasm tih a ni.
4. Visual cortex: A tawp berah chuan he thu hi thluak chhunga mit hmuhna atana inhlan, visual cortex -ah a kal a, chu chuan mit pahnih atanga thlalak te chu a thlunzawm a, a chhunga danglamna te te chu a zirchiang a, kan hmuh thin three-dimensional (3D) image kimchang tak a siam a ni.
A tlangpuiin, depth perception dik tak neih theih nân mit pahnih, a nih loh leh binocular vision , kan mamawh a ni. Mit pahniha kan en chuan angle tenau pahnih atanga thil inang kan hmu a, chuvangin thluak tan chuan a hlat zawng leh a thuk zawng dik taka chhut a awlsam zawk. Mahse, mit pakhat chauh nei tan pawh (monocular vision) , hun kal zelah thluak hian hei hi a thiam a, thuk zawng chu eng emaw chen a hre thei ta a ni. Mahse, mit pahniha kan hmuh angin a fiah lo mai thei.
Depth perception tichhe thei damdawi lam dinhmun tlanglawn tak takte chu engte nge ni?
Kan mit emaw, kan thluaka visual processing emaw-ah harsatna a awm chuan kan depth perception pawh a nghawng thei bawk. Hetah hian dinhmun tlangpui thenkhat tarlan a ni.
| Damdawi lam dinhmun | A awlsam zawngin... |
|---|---|
| Hmuh theihna hniam tak | Mit hmuhna lama harsatna, hla tak leh hnai taka hmuh theihna te hian mit hian thluak lamah thlalak chiang tak a thawn thei lo va, thuk zawk hriat a harsa hle. |
| Strabismus tih hi a ni | Mit hian kawng khat a kawhhmuh lo va, mit pakhat chu kawng dangah a inher a ni. Hei hian thluak tan chuan thlalak pahnih inzawmkhawm a, 3D image siam a harsat phah a ni. |
| Mit tha lo tak (Amblyopia) . | Mit pakhata mit hmuhna chu a dang aiin a chak lo zawk hle. Hei hian thluak hian mit chak lo zawk atanga signal lo lut chu a ngaihthah tir thin. Hei hian depth perception a nghawng bawk. |
| Mit hliam a awm | Mit, a bik takin optic nerve tichhe thei accident a awm chuan thluaka information thleng chu a tibuai thei a, depth perception pawh a bo thei bawk. |
Engtin nge ka depth perception-ah harsatna ka neih leh neih loh ka hriat theih ang?
I mit hmuh danah inthlak danglamna i hmuh chuan hre reng ang che. Heng symptoms te hi i neih chuan doctor pan a tha ber .
| Heng chhinchhiahnate hi ngaihven rawh. | |
|---|---|
| Mit hmuh a fiah lo | Thil awmte chu a blurry a, chiang taka hmuh theih loh anga lang a nih chuan. |
| Mit pahnih hmuh theihna (Diplopia) . | Thil pakhat chu pahnih ang a nih chuan. |
| Mit na thar a ni | Mit natna chhan awm lova lo awm leh ni rei lo te chhunga reh lo. |
| Eng laka sensitivity nei | I mit chu êng pangngaiah pawh a sen hring nia i hriat chuan. |
| Mit hmuhna a tichhe thin | I mit hmuh chu a chhe zauh zauh tih i hriat chuan. |
Zanah kan depth perception a tlahniam em?
Hei hi mi tam takin zawhna an zawh thin a ni. Zanah êng tlakchham vangin kan hmu tlem tlangpui a, mahse thuk kan hriat theihna hi tihtlem tur a ni lo. Chu chu zanah pawh thil pakhat hlat zawng leh a lian zawng kan hre thiam tur a ni tihna a ni.
Mahse zan lama i mit hmuhna chu midang aiin a chhe zawk tih a chiang a, lirthei khalh a harsat phah a nih chuan ‘zan lama mitdelna’ (Nyctalopia) tih natna lan chhuahna a ni thei. If you experience this , doctor pan nghal rawh..
Heng harsatnate hi eng enkawl dan nge ni?
A tam zawkah chuan hei hi a chinfel dan tur chu a awlsam hle a: i mit hmuh dan siamthat rawh.
- Glasses emaw contact lens emaw: Glasses i bun ngai lo a nih chuan glasses emaw contact lens emaw i mamawh mai thei. I ha tawh a nih chuan i prescription i thlak a ngai mai thei.
- A hnuaia natna enkawl dan: Damdawi lam natna dang, strabismus ang chi i neih chuan i doctor chuan a enkawl dan tur (exercise emaw surgery emaw pawh a ni thei) a hrilhfiah ang che.
Engtin nge kan mit kan enkawl ang?
- I mit hmuh danah danglamna i hmuh chuan, a tlem berah pawh, i doctor hnenah hrilh rawh.
- Glasses i vuah chuan i mit enfiah fo la, i prescription update rawh.
- Infiamna i khelh emaw, i mit tana hlauhawm thei hna (e.g., welding, thing sawh) i tih hian a inmil tur safety glasses vuah tur a ni.
Doctor hmuh hun tha ber berte chu engte nge ni?
Hei hi a pawimawh hle. I mit hmuh dan a danglam tih i hriat veleh doctor rawn rawh. "Hei hi ni engemaw zat hnuah a bo ang" tih mai mai suh. Thil awlsam tak a ni thei a, mahse natna khirh tak chhinchhiahna hmasa ber pawh a ni thei bawk. Chuvangin i symptoms a zual hma chu nghak suh.
A pawimawh ber chu, i mit a tlakchham thut a nih chuan, emaw, mit na tak i neih chuan damdawi in hnai ber Emergency Department (ETU) pan nghal mai tur a ni.
Kan depth perception hi theihna hlu tak a ni a, kan mit atanga kan chhehvel thil tam tak min pe thei a ni. Chutiang awm lo se chuan khawvel kan hmuh hi a flat a, a pianzia a nei lo ang. Chuvangin i mit kha fimkhur rawh. I mitthla danglamna tlemte pawh ngaihthah suh.
Take-Home Thuchah a ni
- Depth perception hi theihna pawimawh tak a ni a, khawvel hi 3D-a kan hmuh theih nan leh thil awmte hlat zawng leh a lian zawng kan hriatthiam theih nan min pui a ni.
- Hei hian kan mit leh thluak pahnih hi hrisel leh thawhhona tha tak kan neih a ngai a ni.
- Mit hmuh fiah lo, mit pahnih, mit na thar ang chi symptom i neih chuan ngaihthah suh.
- Vawi tam tak chu heng harsatnate hi glasses dik tak emaw contact lens emaw hmangin siamthat theih a ni.
- I mit hmuh danah danglamna i hmuh chuan tihkhawtlai lohvin Doctor pan rawh.Mit a hloh nghal emaw, natna nasa tak emaw a awm chuan ETU-ah kal nghal tur a ni.
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