Kusarudza iyo chaiyo yekuona lenzi inoda kutarisa pane akati wandei mapoinzi. Kornea, iyo yekunze-yekunze yeziso, yakapfava uye yakatsetseka. Kunyangwe ichingoita hafu yemamirimita mutete, chimiro chayo uye kushanda kwayo kwakadzama kwazvo, ichipa 74% yesimba rekuona reziso. Sezvo macontact lens akasangana nepamusoro pecorneal, kuapfeka kunotadzisa cornea kutora oxygen kusvika pamwero wakati. Naizvozvo, kusarudza lenzi hakufanirwe kutorwa zvishoma.

Panyaya iyi, vanachiremba vanokurudzira kunyatsotarisisa kune zvinotevera zviratidzo pakusarudza contact lens:

Material:
Kuti unyaradze, sarudza hydrogel zvinhu, iyo yakakodzera kune vazhinji vanopfeka zuva nezuva, kunyanya avo vanoisa pamberi kunyaradza. Kuti uwedzere kupfeka, sarudza silicone hydrogel zvinhu, izvo zvinopa yakakwira oksijeni permeability uye yakanakira vanhu vanopedza maawa akawanda pamberi pemakomputa.

Base Curve:
Kana usati wambopfeka malenzi ekuona, unogona kushanyira kiriniki yemaziso kana chitoro chemaziso kuti uedzwe. Iyo yepasi curve yema lenses inofanirwa kusarudzwa zvichibva pane curvature radius yepamberi peiyo cornea. Kazhinji, base curve ye8.5mm kusvika 8.8mm inokurudzirwa. Kana ma lenzi akatsvedza panguva yekupfeka, kazhinji nekuda kwebhesi curve iyo yakakura kwazvo. Sezvineiwo, base curve iyo idiki zvakanyanya inogona kukonzera kutsamwiswa kwemaziso panguva yekupfeka kwenguva refu, kukanganisa kuchinjana kwemisodzi, uye kutungamirira kune zviratidzo zvakaita se hypoxia.

Oxygen Permeability:
Izvi zvinoreva kugona kwemalenzi kutendera okisijeni kuti ipfuure, kazhinji inoratidzwa seiyo DK/t kukosha. Zvinoenderana neInternational Association of Contact Lens Educators, malenzi anoraswa zuva nezuva anofanirwa kuve neokisijeni permeability inodarika makumi maviri nemana DK/t, ukuwo malenzi akareba anofanirwa kudarika 87 DK/t. Paunenge uchisarudza lenzi, sarudza kune avo vane yakakwira oksijeni permeability. Nekudaro, zvakakosha kusiyanisa pakati peokisijeni permeability uye transmissibility yeokisijeni:Oxygen Transmissibility = Oxygen Permeability / Central Thickness. Dzivisa kutsauswa neokisijeni permeability kukosha yakanyorwa papakeji.

Mvura Yemukati:
Kazhinji, mvura yemukati mukati mehuwandu hwe40% kusvika 60% inoonekwa seyakakodzera. Pamusoro pezvo, zvirinani lens yekuchengetedza unyoro tekinoroji inogona kuvandudza nyaradzo panguva yekupfeka. Zvisinei, cherechedza kuti mvura yakakwirira haisi nani nguva dzose. Nepo huwandu hwemvura hwepamusoro huchiita kuti lenzi dzipfave, dzinogona kutungamirira kumaziso akaoma panguva yekupfeka kwenguva refu.

Muchidimbu, kusarudza malenzi ekuonana kunoda kutarisisa kwakadzama kwemamiriro emeso ako, maitiro ekupfeka, uye zvaunoda. Usati waapfeka, ongororwa maziso uye tevera zano rachiremba wako kuti uve nechokwadi cheutano hwemaziso.