本文關(guān)鍵詞：短眼軸患者人工晶體測(cè)量公式準(zhǔn)確性的分析　出處：《山東大學(xué)》2015年碩士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： 短眼軸 人工晶體屈光力計(jì)算公式 前房深度

【摘要】：目的：分析短眼軸患者白內(nèi)障術(shù)后屈光誤差與不同人工晶體屈光力計(jì)算公式的關(guān)系,尋找影響人工晶體屈光力計(jì)算公式準(zhǔn)確性的因素,探討適合此類(lèi)患者的人工晶體屈光力計(jì)算公式。方法：本研究分為兩部分。第一部分為理論分析：通過(guò)單變量分析的方法,在給定合理數(shù)值的情況下,分析不同人工晶體屈光度計(jì)算公式的計(jì)算結(jié)果,比較不同公式的理論一致性,從而找到不同公式在理論計(jì)算結(jié)果之間的差異。第二部分為自身回顧性研究,篩選2012年4月至2014年11月之間在山大二院眼科施行白內(nèi)障超聲乳化摘除聯(lián)合后房型人工晶體植入手術(shù)的眼軸小于22.0mm的患者,共36人(48眼),術(shù)前應(yīng)用IOL-master測(cè)量人工晶體屈光度計(jì)算所需相關(guān)參數(shù),計(jì)算人工晶體屈光度及預(yù)期術(shù)后屈光度,術(shù)后3至8周內(nèi)復(fù)查,散瞳電腦驗(yàn)光測(cè)量等效球鏡。計(jì)算絕對(duì)屈光誤差。對(duì)比分析SRK/T、Hoffer Q、 Haigis-1(僅優(yōu)化a0)、Haigis-3(優(yōu)化a0、a1、a2)公式中位絕對(duì)誤差、平均絕對(duì)屈光誤差與前房深度、角膜曲率的相關(guān)性。所有統(tǒng)計(jì)結(jié)果使用SPSS17.0軟件分析。結(jié)果：第一部分,眼軸大于24mm時(shí),各公式結(jié)果的一致性較好,隨眼軸減小,Haigis-1公式、SRK/T公式和Hoffer Q公式偏離趨勢(shì)增加；短眼軸情況下,Haigis-1公式的結(jié)果與SRK/T公式、Hoffer Q公式的偏差較大,Haigis-3公式的結(jié)果偏差較��；不同前房深度時(shí),Haigis-1公式結(jié)果明顯背離其他公式,Haigis-3公式與Hoffer Q公式最為接近并形成交叉,其平均誤差為0.35D,當(dāng)2.3mmACD3.3mm時(shí),二者的偏差小于平均差,提示根據(jù)前房深度進(jìn)行分組時(shí),可以使用2.3mm和3.3mm為分界點(diǎn)。第二部分,SRK/T、Hoffer Q、Haigis-1、Haigis-3公式的中,Haigis-1的平均絕對(duì)屈光誤差較大(0.81D),有統(tǒng)計(jì)學(xué)意義(P0.05),其他公式比較無(wú)統(tǒng)計(jì)學(xué)意義,其中平均絕對(duì)屈光誤差最小的是Haigis-3公式(0.38D),其次為Hoffer Q公式(0.50D)和SRK/T公式(0.45D)；分析角膜曲率和平均絕對(duì)屈光誤差的關(guān)系,Haigis-3公式的絕對(duì)屈光誤差與角膜曲率存在線性相關(guān)(P0.01),SRK/T、Hoffer Q、Haigis-1公式的絕對(duì)屈光誤差與角膜曲率無(wú)線性相關(guān)。分析前房深度和平均絕對(duì)屈光誤差,隨著前房深度變淺,SRK/T、Hoffer Q公式平均絕對(duì)屈光誤差呈增加趨勢(shì),Haigis-3公式絕對(duì)平均屈光誤差則無(wú)明顯增加；當(dāng)前房深度小于等于2.3mm時(shí),Haigis-3公式的平均絕對(duì)屈光誤差為0.35D,與Hoffer Q公式(0.61D)、SRK/T公式(0.62D)有顯著性差異。當(dāng)前房深度大于2.3mm時(shí),SRK/T.Hoffer Q和Haigis-3公式的之間無(wú)顯著性差異；SRK/T、HofferQ公式的絕對(duì)屈光誤差與前房深度成線性相關(guān)關(guān)系(P0.01)。結(jié)論：不同人工晶體屈光力計(jì)算公式導(dǎo)致的短眼軸患者白內(nèi)障術(shù)后的屈光誤差不同。僅優(yōu)化a0常數(shù)的Haigis公式的誤差最大；隨著前房深度的減小,SRK/T、 Hoffer Q、Haigis-1公式的屈光誤差呈增加趨勢(shì),Haigis-3公式無(wú)顯著性變化,因此對(duì)于短眼軸患者選擇人工晶體屈光力計(jì)算公式,應(yīng)該考慮前房深度的影響；僅優(yōu)化a0常數(shù)的Haigis公式在短眼軸患者中會(huì)有較大誤差,不建議使用；優(yōu)化a0、a1、a2三個(gè)常數(shù)的Haigis公式,術(shù)后屈光誤差較小,可以做為推薦公式；對(duì)于前房深度大于2.3mm的患者,Hoffer Q及SRK/T公式均能提供較準(zhǔn)確的結(jié)果,對(duì)于沒(méi)有優(yōu)化三個(gè)常數(shù)Haigis公式的條件下,可以作為首選公式。
[Abstract]:Objective: to analysis the formulas for calculating short axial refractive error after cataract surgery and intraocular lens with different refractive power, find the factors that affect the accuracy of intraocular lens refractive power calculation formula, calculation formula for discussion of intraocular lens diopter in such patients. Methods: This study is divided into two parts. The first part is the theory by analysis. The method of single variable analysis, given the reasonable numerical case analysis of different refractive intraocular lens calculation formula, the theoretical consistency comparison of different formula, so as to find out the differences between the different formula in the calculation results. The second part is the retrospective study, between April 2012 to November 2014 in No.2 Affiliated Hospital of Shandong University ophthalmic screening of cataract phacoemulsification combined with posterior chamber intraocular lens implantation in patients with axial length less than 22.0mm, a total of 36 people (48 eyes), preoperative application IOL-master measurement of intraocular lens power calculation of the required parameters, degree of refractive power of IOL and expected postoperative follow-up of 3 to 8 weeks after the operation, with computer optometry in measurement of spherical equivalent. Calculation of absolute refractive error. Comparative analysis of SRK/T, Hoffer Q, Haigis-1 (only A0 Haigis-3 (optimization), optimization A0, A1, A2) the absolute error formula, the mean absolute refractive error and the correlation between anterior chamber depth, corneal curvature. All statistical results were analyzed by SPSS17.0 software. Results: in the first part, the eye axis is greater than 24mm, the consistency of each formula results better, decreases with the axial, Haigis-1 formula, SRK/T formula and Hoffer Q formula from trend increase; short eye axis case, Haigis-1 formula and SRK/T formula results, Hoffer Q formula of large deviations, smaller Haigis-3 formula results deviation; different anterior chamber depth, the formula of Haigis-1 results from the His formula, Haigis-3 formula and Hoffer Q formula is most close to and form a cross, the average error is 0.35D, when 2.3mmACD3.3mm, the deviation of the two less than the average difference, that were grouped according to the anterior chamber depth, can use 2.3mm and 3.3mm as the cut-off point. The second part, SRK/T Hoffer, Q, Haigis-1, Haigis-3 formula in the mean absolute refractive error Haigis-1 (0.81D), the larger was statistically significant (P0.05), other formula was not statistically significant, the mean absolute refractive error is the smallest Haigis-3 formula (0.38D), followed by Hoffer (0.50D) Q formula and SRK/T formula (0.45D); analysis of the relationship between corneal curvature and mean absolute refractive the error of the linear Haigis-3 formula of absolute refractive error and corneal curvature (P0.01), SRK/T Hoffer, Q Haigis-1, no linear correlation formula of absolute refractive error and corneal curvature analysis of anterior chamber depth and the average. Absolute refractive error, with the depth of shallow anterior chamber, SRK/T Hoffer, Q formula of mean absolute refractive error was increased, the Haigis-3 formula of absolute average refractive error is obviously increased; the real depth is less than or equal to 2.3mm, the average absolute refractive error of Haigis-3 formula for 0.35D, Hoffer and Q (0.61D), SRK/T formula (0.62D formula) there was significant difference. The real depth is more than 2.3mm, there was no significant difference between SRK/T.Hoffer Q and Haigis-3 formula; SRK/T, linear correlation between absolute refractive error and anterior chamber depth into the HofferQ formula (P0.01). Conclusion: the refractive error of short eye axis cataract formula leads to different intraocular lens diopter after different. Haigis error formula is only to optimize the A0 constant of the maximum; with the decrease of anterior chamber depth, SRK/T, Hoffer, Q, refractive error formula of Haigis-1 increased, the Haigis-3 formula No significant changes, so for short eye axis patients intraocular lens refractive power calculation formula, should consider the effect of anterior chamber depth; Haigis formula is only optimized A0 constant will have a greater error in the short axial patients, does not recommend the use of the optimization of A0, A1, Haigis; A2 formula three constants, the smaller refractive error after the operation, can be used as the recommended formula; for anterior chamber depth of more than 2.3mm patients, Hoffer Q and SRK/T formula can provide more accurate results, not for optimization of three Haigis constant conditions, can be used as the preferred formula.

【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：R779.66

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相關(guān)期刊論文 前1條

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本文編號(hào)：1430815