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hyperopia n.=hypermetropia.

hyperostosis

The visx star star 4 combines the technologies of customvue wavescan aberrometer , activetrak 3 - d active eye tracking , iris registration , variable spot scanning and variable repetition rate to provide customized wavefront treatment . in the past , standard lasik corrects refractive errors , such as myopia , hyperopia and astigmatism which are so - called low order aberrations 威視visx star 4是結合前波前像差分析儀3d眼球主動追蹤系統虹膜定位系統ir iris registration及智慧型超微光斑等技術去提供個人化激光矯視療程。在過去,標準lasik可解決近視遠視及散光等所謂低階像差問題。

Corneal surfaces in eyes with regular astigmatism are thought to be toroidal surfaces . based on mathematical models for corneal surfaces before and after treatment , a corneal ablation model is given for such refractive errors as spherical myopia , compound myopic astigmatism , and simple myopic astigmatism . a similar corneal ablation model is also given for such refractive errors as hyperopia , compound hyperopic astigmatism , and simple hyperopic astigmatism 采用超環面( toroidalsurface )建立起規則散光下的角膜曲面模型方程;定量研究了手術光學區屈光不正兩種通用的矯正模型,一種模型適用于單純近視、復性近視散光、單純近視散光的矯正,另一種模型適用于單純遠視、復性遠視散光、單純遠視散光的矯正;另外,作為影響手術效果的重要因素,提出了一種用于光學區直徑和過渡區寬度均可調節時過渡區角膜切削量的計算模型。

Hyperopia , or farsightedness , occurs when the shape of the eye is too short . in this case , light rays are focused on a point behind the retina 當眼睛的形狀是太短的,遠視或者遠視,發生。在這種情況下,光線集中于在視網膜之后的點。

Asia medicare limited , hong kong laser eye centre , refractive errors : myopia short - sightedness , hyperopia long - sightedness and astigmatism 亞洲醫療服務香港有限公司,香港激光矯視中心,屈光不正:近視遠視散光及老花-

The excimer laser refractive surgical instrument can be used to correct myopia , hyperopia astigmatism diopter 摘要準分子激光眼科治療機可以用來進行近視、遠視、散光等屈光不正的矯正手術。

Hyperopia long - sightedness a long - sighted or hyperopic eye is shorter than normal 遠視的主要成因是眼球長度比正常短或角膜的弧度不足。