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首頁> 美國衛(wèi)生研究院文獻>ISRN Ophthalmology >The Role of Axial Length-Corneal Radius of Curvature Ratio in Refractive State Categorization in a Nigerian Population
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The Role of Axial Length-Corneal Radius of Curvature Ratio in Refractive State Categorization in a Nigerian Population

機譯:尼日利亞人口屈光比軸長角半徑在屈光狀態(tài)分類中的作用

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摘要

The aim of this study was to investigate the association of axial length (AL)/corneal radius of curvature (CRC) ratio (AL/CRC) with spherical equivalent refractive state (SER) in young adults. A total of seventy (n = 70) subjects consisting of 31 males and 39 females participated in this study. Subjects were categorized into emmetropia, hyperopia and myopia using the spherical equivalent refraction. The axial length was measured with I-2100 A-Scan ultrasonography/Biometer (CIMA Technology, USA), the corneal radius of curvature with Bausch & Lomb H-135A (Bausch & Lomb Corp., USA), and the refractive state by static retinoscopy and subjective refraction. The mean AL, CRC and AL/CRC ratio of all subjects were 23.74 ± 0.70 mm, 7.84 ± 0.19 mm, and 3.03 ± 0.14, respectively. Myopes had significantly longer AL, steeper CRC and higher AL/CRC ratio than the emmetropes and hyperopes. There was statistically significant inverse correlation between AL and CRC (r = −0.53, P < 0.0001), SER (r = −0.64, P < 0.0001), and between SER and AL/CRC (r = −0.78, P < 0.0001). A significant positive correlation was found between CRC and SER (r = −0.69, P < 0.0001). The categorization of the refractive state of an individual is better done by using the AL/CRC ratio index.
機譯:這項研究的目的是調(diào)查年輕人的軸向長度(AL)/角膜曲率半徑(CRC)比(AL / CRC)與球等效屈光狀態(tài)(SER)的關(guān)聯(lián)??偣财呤╪ = 70)位受試者,包括31位男性和39位女性,參加了這項研究。使用球面等效屈光度將受試者分為正視,遠視和近視。軸向長度通過I-2100 A掃描超聲/生物測量儀(美國CIMA Technology)進行測量,角膜曲率半徑通過博士倫(Bausch&Lomb)H-135A(美國博士倫公司)進行測量,屈光狀態(tài)由靜態(tài)檢影和主觀驗光。所有受試者的平均AL,CRC和AL / CRC比分別為23.74±0.70mm,7.84±0.19mm和3.03±0.14。與正視眼和遠視眼相比,近視眼具有明顯更長的AL,更陡的CRC和更高的AL / CRC比。在AL和CRC之間(r = -0.53,P <0.0001),SER(r = -0.64,P <0.0001),在SER和AL / CRC之間(r = ?0.78,P <0.0001),在統(tǒng)計上存在顯著的反相關(guān)關(guān)系。 。發(fā)現(xiàn)CRC與SER之間存在顯著的正相關(guān)(r = -0.69,P <0.0001)。通過使用AL / CRC比率指數(shù),可以更好地完成個人屈光狀態(tài)的分類。

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