Khawvel hi engtin nge chiang taka kan hmuh tih hi i ngaihtuah ngai em? Hei hi a chhan ber chu kan mit hmaa membrane langtlang, te tak te vang a ni. He part hi camera lens ang maia hnathawk hi "Cornea" an ti a. He mitmeng (cornea) pianzia hi tlemte pawh a danglam chuan kan hmuh chu a hlim lo thei a, a danglam thei bawk. Chutiang hunah chuan `Corneal Topography` kan ti a, i mitmeng pianzia dik tak enfiahna atana test pawimawh tak leh hrehawm lo tak a ni.
A awlsam zawngin, Corneal Topography chu eng nge ni?
He hming hi a mak deuh mai thei. Geography-ah hian "topography" tih thumal hi kan hmang tlangpui a, chu chu leilung pianzia, tlang, ruam, lui, etc. pianzia tarlanna map siam nan a ni a, chuti a nih chuan engtin nge hmuh theihin map i siam ang?
I mit (cornea) chu thliarkar te tak te ang maiin han ngaihtuah teh. He thliarkar leilung hmun thenkhat chu a sang a, hmun thenkhat chu a hniam a, hmun thenkhatah chuan khur a awm thei bawk. Mahse heng inthlak danglamnate hi kan mitin kan hmu thei lo mai mai a ni. Chuvang chuan technique pakhat `Corneal Topography` tih hi hman a ni. A tih chu, computer device bik hmangin i mit (cornea) chu three-dimensional (3D) map a siam a ni. He map hi rawng hrang hranga tarlan a ni. Chutiang rawng hmang chuan mit (cornea) chu khawiah nge a sang, khawiah nge a flat, khawiah nge a hring, leh khawiah nge a thuk tih chiang takin kan hmu thei a ni.
A awlsam zawngin sawi ila, hei hi i mit tan chuan thlalakna bik ang mai a ni. Natna a awm lo va, engmahin i mit a khawih lo.
Engvangin nge he fiahna hi kan mamawh?
He test hian mit lam enkawlnaah hna pawimawh tak tak engemaw zat a thawk a ni. A chhan lian ber pathum a awm.
1. Mit natna hriatchhuah a, a kal zel dan enfiah
Mit natna thenkhat hian mitmeng (cornea) pianzia leh a thuk zawng direct-in a nghawng a ni. Hetiang natna hriat chian nan hian he test hi a pawimawh hle.
- Astigmatism: Mit (cornea) chu a round tawk lo va, a sei deuh deuh a, egg ang maia awm a ni. Hei hian mit a ti fiah lo thei a ni.
- Keratoconus: Hei hi natna khirh tak a ni. Heta thil thleng hi chu mit (cornea) chu a thim zauh zauh a, cone ang maiin hmalam a pan chho ta a ni. Hei hi a tir lamah hriat theih nan `Corneal Topography` test hi a pawimawh hle.
- Pellucid marginal degeneration (PMD): Hei hi mit (cornea) a hring (cornea) thin (cornea) thin a ni bawk.
- Hliam emaw, hri kai emaw avanga hliam: Mit (cornea)-ah hliam a awm chuan mit hmuhna a nghawng dan chiang takin i sawi thei ang.
- Pterygium: Mit var atanga mit lam (cornea)-a sa ang chi a lo thang lian thin.
2. Surgery neih dan tur ruahman la, result enfiah
He test hi mit surgery-ah a pawimawh hle a, a bik takin mit surgery-ah chuan a pawimawh hle.
- Laser vision correction surgery (LASIK or PRK): Mi tam tak chuan `(LASIK)` surgery hmanga glasses emaw contact lens emaw paih chhuah an duh a. Mahse mi zawng zawng hian he surgery hi an nei thei lo. He test hi i mit (cornea) pianzia leh a thickness te hi he surgery atan hian 100% a a inmil em tih hriat chian nan tih a ni ngei ang. Sawi tawh ang khan `(Keratoconus)` ang chi hi natna lanchhuahna nei lo pawh nise hriat theih a ni. Chutiang mite tan `(LASIK)` tih a nih chuan harsatna na tak a awm thei a ni.
- Cataract surgery: Cataract lakchhuah a, artificial lens dah a nih hian, chu lens chakna dik taka chhut theih nan mitmeng (cornea) pianzia chungchang hriat a pawimawh hle.
- Cornea transplant surgery: He test hian mit chhia chu a thara thlak hma leh a hnua a dinhmun enfiah nan a pui a ni.
- Corneal cross-linking: `(Keratoconus)` ang chi natna avanga mit chak lo tawh chu tihchakna tur surgery a ni . He surgery hi ruahmanna siam nan pawh he test hi a ngai a ni.
3. I mit nena inmil tur contact lens thlang rawh.
Contact lens pangngaia fit tur chuan he test hi a ngai ngai lo. Mahse, i mit (cornea) chu a pianzia pangngai lo, Keratoconus ang chi a nih chuan lens pangngai chuan hna a thawk lo ang. Chutiang a nih chuan rigid contact lens bik (Rigid gas-permeable - RGP lens) i hman a ngai ang. Chutiang lens chu i mit nena inmil tawk tur chuan mitmeng tehna zawng zawng lak vek a ngai a, chu lens chu a inmil tur anga siam a ngai a ni. Chumi atan chuan Corneal Topography atanga map kan hmuh hi a tangkai hle.
He test hi tuin nge tel duh?
He test hi i mamawh em tih i ngaihtuah mai thei. Doctor-te chuan a hnuaia thil awm danah hian he test hi an rawt tlangpui.
| Dinhmun | Chhan |
|---|---|
| Laser surgery (LASIK ang chi) i ngaihtuah a nih chuan . | I mit (cornea) chu operation atan a tha em tih leh damdawi lam dinhmun thup a awm loh nan enfiah rawh. Hei hi tih ngei ngei tur a ni. |
| Corneal condition avanga operation i mamawh chuan | Doctor chu surgery tur dik taka ruahman a, result tha ber a neih theih nan a pui thin. |
| Mit surgery i neih tawh chuan | Surgery result leh mitmeng (cornea) pianzia a inthlak dan te enfiah thin ang che. |
| Contact lens bik i mamawh chuan | Cornea pianzia danglam tak nena inmil tur lens nuam tak thlang rawh. |
Test a awlsam hle mai!
Test hmain inbuatsaih a ngai em?
A tlangpuiin inbuatsaihna bik a ngai lo. Mahse , contact lens i vuah chuan i doctor chuan test hma ni engemaw zat, a nih loh leh kar engemaw zat pawh ni se, i bun tawh loh tur thu a hrilh ang che. Hei hi a chhan chu lens vuah hian i mit (cornea) natural shape (corneal warpage) chu hun engemaw chen atan a thlak danglam thei a ni. Chuvangin tehna dik tak neih theih nan i mit (cornea) chu a pianphung anga a lo awm leh hma chu i nghah a ngai a ni.
Test neih chhung hian eng nge thleng?
Hetiang zawng zawng hi minute tlemte chauh a ni.
1. Ball lian tak ang maia lang machine hmaa chair-a thut tir i ni.
2. I hmai leh i hmui chu hmun ruat saah dah la, nuam taka awm turin hrilh i ni.
3. Tichuan ball chhunga êng engemaw zat chu en nghal turin an ti a.
4. I nghah lai hian machine hian i mit thlalak eng emaw zat a la a, thawm leh natna engmah a awm lo.
5. Thlalak lakte chu computer hmangin an zirchiang a, a chunga kan sawi tawh ang khan color map-ah an chantir thin.
Chu chu a ni ta! Engmah i hre lovang. Machine hian i mit pawh a deng lovang . Thlalak lak ang mai a ni.
Test result... map rawng hrang hrang!
Test zawhah i doctor chuan map rawng hrang hrang a pe ang che. Chûngte chu i hmuh chuan eng nge an nih i hre thei lo mai thei. Mahse rawng tin leh number tin hian awmzia a nei vek.
A tlangpuiin, rawng lum tak tak, sen leh orange ang chi hian mit (cornea) hmun sang/a chhuak tih a tarlang a ni . Blue leh green ang chi colour lum hian mitmeng (cornea) hmun flat/low a tarlang a ni .
Doctor mamawh information a zirin map chi hrang hrang hmuh theih a ni.
| Map chi hrang hrang | Hei hian eng nge min hmuhtir? |
|---|---|
| Axial Map (Sagittal Map) hmanga siam a ni. | Hei hi map hman tam ber a ni. Cornea curvature, i.e., hmun sang leh hniam (tlâng leh ruam ang chi) a entir a ni. Cornea hrisel takah chuan he map hi green a ni fo thin. |
| Elevation Map a ni | Hei hian i mit (cornea) chu computer-a siam "standard shape" nen a khaikhin a ni. Warm color hian standard shape aia sang zawk hmun a tarlang a ni. Cold colour hian standard shape aia hniam zawk hmun a tarlang a. |
| Corneal Thickness Map (Pachymetry map) a awm a, a chhuahna tur hmun leh a hmanna tur hmun hi a inthlau hle. | He map hian mitmeng (cornea) thickness a tarlang a. Color lum (red ang chi) hian hmun thim zawk a kawk a, colour lum (blue ang chi) hian hmun thim zawk a kawk bawk. He map hi keratoconus ang chi dinhmun hriat nan a pawimawh hle a, chutah chuan mit (cornea) a thim deuh thin. |
Heng map rawng hrang hrang te hian hlauthawng suh. Heng map-a thu awmte dik taka zirchian a, i dinhmun sawifiahna pek hi i doctor mawhphurhna a ni. Zawhna i neih apiang zawt rawh.
Hei hi a him em? Engtikah nge doctor ka biak ang?
Awle. Corneal Topography hi 100% safe test a ni. Risk leh side effect hriat a awm lo. Natna nei lo, fiahna rang tak a ni bawk.
I test result chungchanga zawhna i neih chuan, emaw, i mit symptoms (blurred vision, pain ang chi) a thar emaw, a na zual emaw a nih chuan doctor pan nghal rawh.
Take-Home Thuchah a ni
- Corneal Topography hi test natna nei lo leh him tak a ni a, mit hmalam (i mit hmalam a transparent part) 3D map a siam a ni.
- Hei hi `Keratoconus` leh `Astigmatism` ang chi natna hriatchhuah nan a pawimawh hle a, `LASIK` ang chi laser surgery atan pawh i tling em tih hriat nan a pawimawh hle.
- Hei hian mit (cornea) pianzia danglam tak takte tan specialized contact lens siam a pui a ni.
- Test result hi color map angin tarlan a ni. I doctor chuan hengte awmzia hi thumal awlsam takin a hrilhfiah ang che.
- He test chungchangah emaw, result chungchangah emaw zawhna i neih chuan i doctor zawt hreh suh.
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