I mit vel thilte chu eng chen nge i hmuh theih? (Peripheral Vision) He thawnthu hi a ni!

Kawngpuiah i kal a, emaw, mi i biak a, hmalam hawi nghal chung pawhin, a sir lehlamah mi emaw, thil emaw lo thleng chu i hmu lo thei lo em ni? Chu chu ``Peripheral Vision'' kan tih mai chu a ni. Hei hi kan nitin hnathawhna atan a pawimawh hle. Vawiin hian he thu hi chipchiar zawkin sawi ila, kan sawi dawn em ni?

Peripheral vision chu eng nge ni tak tak?

A awlsam zawngin, i lu ti sawn lovin hmalam i hawi nghal chuan, i hmaa i hmuh bakah, a sir lam, a chung lam leh a hnuai lam i hmuh chu ``Peripheral Vision.`` tih a ni.`` Hmalam lam i hawi nghal a i hmuh chu ``Central Vision.`` an ti a ni

I mitmeng atanga thil i hmuh tawh chuan i ``Peripheral Vision'' i sawi a ni. Hei hi a thumal dang chu `` Indirect Vision'' tih hi a ni.I ``Central Vision'' hi i ``Peripheral Vision'' aiin a chiang zawk tlangpui. Hei hi kan mit hian kan en direct a ``focus'' vang a ni.

I hmuh theih zawng zawng, chu chu hmalam leh a chhehvel zawng zawnga hmuh theihna hmun zawng zawng chu hmuh theihna hmun (visual field) an ti a ni.

Engvangin nge peripheral vision hi kan tan a pawimawh em em?

``Peripheral Vision`` tha neih hi a pawimawh hle a, a chhan chu i field of vision, i hmuh theih area zawng zawng a tizau a ni. I hmalam atanga i hmuh theih angin thil chipchiar takin i hmu lo mai thei a, mahse, peripheral vision hian i direct vision pawn lama awm rawng, chetna leh pianzia te chu a hmu thei a ni.

Kawngpuiah i kal anga han mitthla teh. Hmalam i thlir chuan he `(Peripheral Vision)` hi a ni a, a sir lehlamah emaw, mi pakhat emaw atanga lirthei lo kal chu i hre nghal thei a ni. Chutiang bawkin lehkhabu kan chhiar hian, lirthei kan khalh hian, cricket ang game kan khelh hian kan `(Peripheral Vision)` hian heng zawng zawngah hian min pui thin.

Engtin nge peripheral vision hian hna a thawh tak tak?

Hei hi hrethiam tur chuan hetiang hian han ngaihtuah teh: Stage-a actor pakhatin mipui a en a, a nih loh leh cricket match-a wicketkeeper pakhatin field a en chhuak a. An lu sawn lovin hmalam an hmu nghal thei. A sir leh a laiah eng emaw chen an hmu thei. Mahse dinglam leh veilam hla takah chuan chiang takin an hmu thei lo. Chutiang chuan kan vision hian hna a thawk a ni.

Mit pêng engte nge he hmuh theihnaah hian ṭanpui?

Kan mit peng zawng zawng deuhthaw hian hmalam kan hmu nghal thei (Central Vision). Mahse mit chhunga thil pawimawh ber chu retina , macula, leh fovea te hi an ni.`(Fovea)` an tih part te hi a pawimawh ber a ni. Retina `(Retina)` hi kan mit chhunga membrane awm a ni. Hei hi light mantu cell `(Photoreceptor cells)` awmna hmun a ni. He retina hian hmun pakhat `(Macula)` tih a nei a. A chhungah chuan `(Fovea)` (a then chuan `(Fovea Centralis)` an ti) a awm a. He `(Fovea)` tih hmun atang hian vision chiang ber, chiang ber i hmu thin.

Chuvangin, i mit chhungah chuan center part chu mit hmuhna fiah berna hmun a ni. Retina lairil lam sir lehlamah hmun hrang hrang a awm a - hei hi peripheral retina kan tih chu a ni. Chu hmunte chu kan chhehvel (peripheral vision) hmuh theihna tura min puitu a ni.

Peripheral vision a bo emaw, a tlahniam emaw a nih chuan eng nge thleng ang?

Hma lam dinglam chauh i hmuh theih chuan, chu chu i `(Peripheral Vision)` i hloh tawh a nih chuan, chu dinhmun chu `(Tunnel Vision)` kan ti a ni. Tube hmanga i en ang mai a ni , a nih loh leh chanchinbu phek hrual chhunga i en ang mai a ni. Chu ``tube'' avang chuan hmalam panna dik tak chauh i hmu thei. (A chang chuan he thumal `(Tunnel Vision)`` hi damdawi lam ni lo, mi rilru na tak, thil pakhat chauh ngaihtuah thin sawina atan an hmang thin.)

A lehlamah chuan i central vision i hloh a, peripheral vision chauh i neih chuan central blind spot i nei a ni . Scotoma hi mitdelna (blind spot) sawina damdawi lam hming a ni.

I chhehvel i en hian light, streak, blur, a nih loh leh thil awm tak tak lo i hmuh chuan engtin nge ni ang?

Eye floater leh flashes hi a tam hle a, direct vision leh peripheral vision-ah te pawh a awm fo. I tar chhoh zel chuan i mit chhunga jelly ang chi (the vitreous humor) chu a tlahniam zel a. Hei hian a hnah te te a ti chhe a, chu chuan i mit atanga êng kal chhuak ang maia lang floater leh flashes te a siam a ni.

Thil awm lo hmuh chungchang sawi ila, a chang chuan i peripheral vision-a thil awmte chu a kal chak hlein a lang thei a, a hlim lo hle niin a lang a, a nih loh leh i lu i hawi hma pawhin a bo thei bawk.

Mahse, ṭhenkhatah chuan hetiang thil hmuh hi harsatna lian zawk chhinchhiahna a ni thei. Entirna thenkhat chu hetiang hi a ni:

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* Hallucinations : Thil awm lo tak tak hriatchhuah. Chûngte chu hmuh, hriat, rim, khawih , leh thlum a ni thei.

* Charles Bonnet Syndrome : Hetiang dinhmun hi mitdelte’n thil awm tak tak lo a hmuh hian a lo awm thin.

A hma aia tam streak, blurs, flashes of light, leh thil awm lo i hmuh tam zawk a nih chuan mit lam doctor pan a hun tawh tak zet a ni. Diagnosis dik tak hriat theih nan doctor pan hi a tha ber fo.

Peripheral vision check nan eng nge i tih thin?

I mit doctor-in i mit a enfiah hunah i peripheral vision pawh a check ang. He visual field test hi a hrehawm lo. Inbuatsaihna bik a ngai lo. Results chuan i doctor hnenah i lu tiche lovin eng chen nge chunglam, hnuai lam leh sir lam i hmuh theih tih a hrilh ang. I mit hmuhna hmun tinah i mit hmuhna a sensitive zia a lantir bawk ang.

I peripheral vision enkawl leh tihchangtlun nan eng nge i tih theih ang?

I mit hriselna atana i thil tih hian i ``Peripheral Vision`` a pui thei bawk. Chumi awmzia chu:

• I mit chu a hun takah enfiah tir thin ang che .
• Active taka awm reng. Exercise mumal pawh hi mit tan a tha hle.
• Mediterranean Diet ang chi ei leh in hrisel zawm. Hei hi thlai, thei, legumes, sangha, leh olive oil tamna diet a ni.
• Thau lutuk leh thau lutuk control.
• Mit venna vuah. Sunglass ang chi thil hman hi mit tan a tha.

I central vision tichhe thei condition i neih chuan i doctor hnenah condition control dan tur leh i peripheral vision tihchangtlun dan tur zawt rawh. Vision therapy , a nih loh leh mit exercise lama tui doctor pawh an awm bawk.

Take-Home Thuchah a ni

Kan nitin nunah hna zawng zawng deuhthaw ah hian `(Peripheral Vision)` hi hriat lohvin deuhthaw kan hmang thin. Kawngpuia kan kal lai te, lehkhabu kan chhiar lai te, motor kan khalh lai te, heng zawng zawng hi min pui thin. A bo a nih chuan thil chi hrang hrang kan tawk thei a, kan tlu thei bawk. He `(Peripheral Vision)` hi a ni, bowler-in cricket a khelh laiin batsman-in `base` ruk a tum lai a hriat theih nan a pui a ni.

Mit natna thenkhat hian i central vision a nghawng thei a, i peripheral vision chu a awm reng thei a ni. Thil dangin i peripheral vision a nghawng thei a, a chunga kan sawi tawh tunnel vision ang chi condition a thlen thei bawk. Chuvangin, i dinhmun dik taka hmuchhuak thei leh enkawl thei tur leh i mit hrisel thei ang bera awm tir thei tur mit lam doctor pan a pawimawh reng a ni. I mit hi thil hlu tak a ni a ni lawm ni?

` Side vision, peripheral vision, straight vision, field of vision, mit hriselna, tunnel vision, mit enfiah