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ѡǧҢͧ(Ҫ 18342)

  ǧҢͧ
зӤѭЫѺ͹ش˹觢ͧ ǹ˭ѡǧҤҡ仡 ǹ˹ҷ㹡ͧ "ǧ˹ҵҧͧš" ҡԴѭҡѺµҡռŵͤسҾԵͧ 㹺ôһҷʷ µҷѺҧҧѴش ҡµšͧҡŧ ҡФԴ֧šѹ˹ ҡФԴ֧÷ͧԹҡ Ѻҷ "ҧҾ" šͺ ѹҨоҤسѡѺ "˹ҵҧ" ҹѺѺ
   

ͧ繢ͧǧ
ǧ
ٻçҴ鹼ٹҧҳ 2.2 - 2.5 . è㹡д١ҵ ͻͧѹѹ ҹ˹͡Т ˹ҷͧѹѹµʹǧ ͡ҨСоԺ ӵͺШ С лСͺӤѭ 3 ǹ ˹ҷᵡҧѹաִ 6 Ѵ Ѻǧҷͧ öӧҹѹѹʹ

ǹСͺѡ㹡ͧ
1. Ш ( Cornea)
˹ҷѡǡѺ ѡʧҹ١
2. Źǵ (Crystalline lens)
˹ҷʧ (Focus) 仵ͻҷ
3. ͻҷͨѺҾ (Retina)
˹ҷ繵ѺҾ¡Ѻ㹡ͧٻ

ͧҡ鹵͹ѧ仹
ʧҹ价Ш ( Cornea ) ǹʨҡШ ʧҹ价ҹ (Pupil) յҧѹͪҵ ҧչӵ 駹鹡Ѻ (Melamin Pigment) ͧ ҹҨз˹ҷ㹡ûѺҳͧʧ㹴ǧ Ѵ 㹵͹ҧѹͧʧ ҹҨբҴ Т˭㹷״ ѧҹ ʧ价ŹµŹǵ (Lens) Źз˹ҷ㹡ʧҨҡ¹͡⿡ʷШ ŹǵҨդҡع ШТҡ ԴԷ辺 ͡Ш 觡͡â蹢ͧŹǵҹͧ ¹ŧӤѭաѹ˹㹼˭ 㹤Թ 40 ŹŴ״ öҹ˹ѧ͵ ͧҹ˹ѧͷ¡ "µ" µҤ ǹѧŹ繹 è¡ "鹵" (Vitreous Humor) ˹ҷ㹡ѡˢͧʧ 㹤اͤµҡ աͧ鹵ҹ ҧ駨繨شӤاŧ㹢зͧѵբ ʧҹشеçشѺҾ (Retina) ǹͧҷҹѺҹ ǹŧҾͧ Ҿҡ鹨ҾǡѺлҷ (Optic Nerve) Ҿ价ͧФҾ㹢йҪѴѴҧ

鹵͹÷ӧҹͧҷԴѡɳеҧѧ
ʧҹ㹵 ʧѺҾʹ¡ѡɳй µһ (EMMERTROPIA)
ʧҹ㹵ʧ ͹ѧѺҾʹ ¡ѡɳй µҼԴ (AMERTROPIA)
.........................................................

µҼԴ
ѡɳзͧջѭԴ (Refractive error) ¡»ѧ

µ (Myopia)
зʧз͹ҡѵաѡ⿡Դ鹡͹ж֧ͻҷ (retina) ͧҾѴਹ

µ (Hyperopia Hypermetropia)
¶֧зʧз͹ҡѵա Focus µ˹觢ͧͻҷ ͧѴਹ

µ§ (Astigmatism)
¶֧зǢͧʧ (focus) 赡ͻҷҡ 1 ش ͧҾ͹ (Double vision)

µҤ٧ (Presbyopia)
µһͧԷеͧԴѺءػҳ 40



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