Optimization of biometry for intraocular lens implantation using the Zeiss IOLMaster

Madge, Simon N.; Khong, C H; Lamont, M; Bansal, Atul; Antcliff, Richard J

doi:10.1111/j.1395-3907.2005.00486.x

Cited by 16 publications

(21 citation statements)

References 4 publications

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“…However, clinically meaningful refractive advantages of personalized Haigis lens constants were not demonstrated, and would be restricted to very high volume cataract 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 Optimized versus Personalized Lens Constants 4 surgeons, and then only as long as they continue to use the same model of IOL that was employed in the process of personalization . 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50...…”

Section: Refractive Resultsmentioning

confidence: 99%

Effect on refractive outcomes after cataract surgery of intraocular lens constant personalization using the Haigis formula

Charalampidou¹,

Cassidy²,

Ng³

et al. 2010

Journal of Cataract and Refractive Surgery

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Methods: A postal survey of all consultant ophthalmic surgeons in the UK and Ireland, regarding the practice of lens constant personalization, was carried out. Also, mean error (ME) of prediction and mean absolute error (MAE) were calculated for a single-surgeon (SB) series of eyes after biometry by partial coherence interferometry (PCI) with the IOL Master and phacoemulsification cataract surgery, where the IOL prediction was based on the Haigis formula and optimized lens constants derived from pooled data from the ULIB (User Group for Laser Interference Biometry) website. Personalization of Haigis lens constants to the same operating surgeon was then performed. An ME of prediction and an MAE using the personalized lens constants was then calculated for the same series of eyes which had been operated upon using the Haigis optimized (but not personalized) lens constants, thereby allowing us to investigate and quantify the maximum realizable refractive benefits (if any) of personalization. 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 Optimized versus Personalized Lens Constants 3 Results: Survey:The survey response rate was 56 %. One hundred and ten (21.7%) of the 506 consultant ophthalmic surgeons in the UK and Ireland who answered the questionnaire did formally personalize their lens constants by a recognized and validated method. The most common reason for non-personalization of lens constants was the use of optimized lens constants derived from pooled data. Refractive results:The ME of prediction and the MAE with Haigis optimized lens constants were -0.09 D (

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Section: Refractive Resultsmentioning

confidence: 99%

Effect on refractive outcomes after cataract surgery of intraocular lens constant personalization using the Haigis formula

Charalampidou¹,

Cassidy²,

Ng³

et al. 2010

Journal of Cataract and Refractive Surgery

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“…Further, the personalized lens constants reported in the current study may be useful reference values that may be used during IOL power calculations to improve the accuracy of prediction. 23 …”

Section: Discussionmentioning

confidence: 99%

Comparison of IOL power calculation formulae for pediatric eyes

Vasavada

Shah

Vasavada

et al. 2016

Eye

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“…G ünümüzde cihazlardaki teknolojik ilerlemeler ve göz içi lens (GİL) kalitesinin artmasıyla refraktif cerrahi olarak değerlendi-rilebilecek düzeye gelen katarakt cerrahisinde başarıyı etkileyen en önemli faktörlerden biri ameliyat öncesi GİL gücünün hatasız hesaplanmasıdır. [1][2][3] Aksiyel uzunluk (AU) ölçü mü, GİL gücü-nün doğru hesaplanmasında en önemli ölçüm olup, ortaya çıkan hatanın yaklaşık %50'sinden sorumludur. 4 AU ve diğer değerlerin ölçümlerinde hataların olmaması ve hedef refraksiyona ulaşılması için yapılan biyometrik ölçüm ler oldukça önemli-dir.…”

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The Reliability of Biometric Measurements Obtained by AL-Scan Optic Biometer in Intraocular Lens Power Calculation

Doğan¹,

Polat²,

Yavaş³

et al. 2015

Turkiye Klinikleri J Ophthalmol

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Ö ÖZ ZE ET T A Am ma aç ç: : AL-Scan optik biyometri cihazı ile elde edilen biyometrik ölçümlerin güvenirliliği-nin değerlendirilmesi ve beklenen refraksiyondan sapma değerlerinin yaş, aksiyel uzunluk (AU), keratometri değerleri (K1, K2) ve ön kamara derinliği (ÖKD) ile ilişkisinin incelenmesidir. G Ge er re eç ç v ve e Y Yö ön nt te em ml le er r: : Ocak 2013-Nisan 2013 tarihleri arasında Afyon Kocatepe Üniversitesi Tıp Fakültesi Göz Hastalıkları Anabilim Dalı'nda katarakt tanısı ile ameliyat edilmiş hastaların dosyaları geriye dönük incelendi. Optik biyometri ölçümünde AL-Scan cihazı kullanılmış ve aynı cerrah tarafın-dan sorunsuz katarakt ameliyatı uygulanmış 34 hastanın 34 gözü çalışmaya dâhil edildi. Hastaların göz ve sistemik bulguları, elde edilen AU, K1, K2 keratometri, ÖKD, emetropi için önerilen göz içi lens gücü ölçümleri ile birinci ay refraksiyon kusurundan sapma değerleri kaydedildi. p<0,05 istatistiksel olarak anlamlı kabul edildi. B Bu ul lg gu ul la ar r: : Hastaların yaş ortalaması 64,73±12,4 yıl (42-81) idi. Cihazdan elde edilen ortalama AU 23,45±0,87 mm, ortalama K1 keratometri 44,02±1,23 diyoptri, ortalama K2 değeri 43,92±1,22 diyoptri ve ortalama ÖKD 3,32±0,4 mm olarak saptandı. Elde edilen hedef refraksiyondan sapma sferik eşdeğeri birinci ayda -0,75-+1,12 diyoptri arasında değişmekte idi ve ortalama -0,06±0,43 diyoptri olarak hesaplandı. Regresyon analizinde hedef refraksiyondan sapma değerleri ile yaş, AU, K1 keratometri, K2 keratometri ve ÖKD parametreleri arasında ilişki gösterilemedi (p>0,05). S So on nu uç ç: : Son yıllarda klinik kullanıma giren AL-Scan optik biyometri cihazı ile elde edilen optik biyometri ölçümleri güvenilir olup, modern katarakt cerrahisinde hedeflenen emetropinin sağlanmasında kullanılabilir.A An na ah h t ta ar r K Ke e l li i m me e l le er r: : Biyometri; lensler, göz içi; refraksiyon, oküler A AB BS S T TR RA AC CT T O Ob bj je ec ct ti iv ve e: : To evaluate the reliability of AL-Scan optical biometer in biometrical measurements and investigate the relationship between refractive deviation and age, axial length (AL), keratometrical values (K1,K2) and anterior chamber depth (ACD). M Ma at te er ri ia al l a an nd d M Me et th ho od ds s: : The records of patients who had cataract surgery between January 2013 and April 2013 in Afyon Kocatepe University, Department of Ophthalmology were evaluated retrospectively. 34 eyes of 34 patients records who underwent uncomplicated phacoemulsification surgery and intracapsular intraocular lens implantation were enrolled to the study. Biometrical measurements of all patients were taken with AL-Scan device. Ophthalmological and systemical examination's findings, AL, K1 K2 keratometrical values, ACD and the deviation between target spherical equivalent (SE) and postoperative 1st month SE were recorded and evaluated. A p value less than 0.05 was accepted as statistically significant. R Re es su ul lt ts s: : The mean age was 64.73±12.4 (42-81) years. The mean AL was 23.45±0.87 mm, mean K1 keratometry value was 44.02±1.23 dio...

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Optimization of biometry for intraocular lens implantation using the Zeiss IOLMaster

Cited by 16 publications

References 4 publications

Effect on refractive outcomes after cataract surgery of intraocular lens constant personalization using the Haigis formula

Effect on refractive outcomes after cataract surgery of intraocular lens constant personalization using the Haigis formula

Comparison of IOL power calculation formulae for pediatric eyes

The Reliability of Biometric Measurements Obtained by AL-Scan Optic Biometer in Intraocular Lens Power Calculation

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