Hoffer q, haigis, holladay 2, and barrett universal ii formulas were evaluated. Retrospective comparative analysis of intraocular lens. Holladay iol consultant hic program uses holladay 2 formula and performs complex power calculation for the surgeon. Phacooptics programme for the olsen formula,10 iol consultant software for the holladay 2 formula,11 and online calculators for the barrett universal 212 and the hill 2. The phrase holladay 2 refers to a mathematical formula that dr. A large iol database has been incorporated into the software for this purpose. This office uses the holladay iol consultant together with the surgical outcomes assessment program to handle this important task. Holladay 2 has emerged as the stateofthe art iol calculation formula and today is the leading formula used by us surgeons.
C the iol power with the hoffer q formula, a third generation iol formula suggested for calculation in short eyes, was selected for implantation. Challenges and approaches in modern biometry and iol. Eyesuite is able to connect to third party iol calculation software. This study investigated the refractive outcomes of cataract surgery with toric iols at an academicaffiliated veterans affairs medical center vamc and compared the accuracy of 2 biometric formulae for toric iol power calculation. The lens constants manufacturer constants are contained in the software and cannot be changed. Clinical results using the holladay 2 intraocular lens power formula. East valley ophthalmology 5620 east broadway road mesa, arizona 85206 tel. The holladay 2 formula with the non linear regression that is now available in the software is equal to or better than the barrett or rbf formulas.
A major shortcoming of most 3rd generation, 2variable formulas, such as. Holladay iol consultant software hicsoap application downloads. Some biometers incorporate the formula into their software. The iol calculator software includes numerous other iol formulas besides those mentioned above. As with 14 eyes and with new frame grabber software on the iolstandard keratometry, these 2 meridians are forced to master in the final 6 eyes.
Pdf biometry and intraocular lens power calculation. Professional software holladay iol consultant software. East valley ophthalmology is a dynamic and rewarding place in which to work. Accuracy of intraocular lens power calculation formulas using a. The use of advanced formulas to improve the accuracy of cataract surgery has been a process of ongoing improvement since the 1980s. Dec 06, 2011 table 2 includes the olsen formula20 with 5 variables and the holladay2 formula with 7 variables. Post myopic lasik holladay iol consultant iol power calculator. The barrett and rbf are both proprietary, like the holladay 2 and are unavailable. Accuracy of intraocular lens power formulas modified for. Precision of intraocular lens power prediction in eyes. It offers space for up to 25 ophthalmologists to maintain their own set of up to 50 favourite iols. Data were entered into the holladay iol consultant software program, which calculated results for 4 formulas. Iolmaster 500 and integration of the holladay 2 formula for.
Discover speedy biometry the iolmaster 500 with holladay 2. Originally developed for the pentacam axl, the iol calculator is now also available in the pentacam hr. Managing excessive residual astigmatism after toric iol. Improved connection to hic holladay iol consultant with holladay 2 formula via ethernet. We strive to employ a team of the most talented and responsible professionals in ophthalmology. Because the holladay 2 formula has yet to be published, its accuracy can only be analyzed using the commercially available holladay iol consultant computer program to compare it to the holladay 1.
Via ethernet connection another pc with holladay iol consultant professional edition hic pe can access to that file using the data for calculation with the holladay 2 formula. They looked at iols iol power that was required to be implanted in 2 groups power 5d and power 5d or less. Try it for yourself click on the video and then test the features in the interactive showroom. Newer versions of the iolmaster carl zeiss meditec, jena, germany and lenstar haagstreit, koniz, switzerland have direct links to the software.
Intraocular lens power calculation after laser refractive. Iol master 500 and integration of the holladay 2 formula for. Cuttingedge, multivariable iol calculation formulae, such as the olsen, barrett or holladay 2 formula for sophisticated iol calculation, demand more than just the axial length and keratometry measurement. Im gratified that a much larger population of surgeons and their patients will benefit from the improved accuracy of iol power calculations by having direct access to the holladay 2 formula, concluded dr holladay. Iolmaster 500 biometer with holladay 2 formula from zeiss. Comparison of the kane formula with existing formulas for. Includes holladay 2, holladay 1, srkt, hoffer q and holladay refraction. The fact that zeiss has now married them into the same box will only help increase access to the holladay 2 formula. Assessment of the accuracy of new and updated intraocular le. It has various other new features, but it still not widely available. The hyperopic version of the haigisl formula is now available on the most recent iolmaster software and also at the ascrs online postkeratorefractive iol power calculator at iol.
Holladay 2 iol consultant surgical outcomes assessment. Oslenss formula uses preoperative refraction and lens thickness for increasing accuracy. The barrett universal 2 formula hereafter referred to as the barrett was calculated using the apacrs website. Features launched in 2000, the iolmaster was the first automatic biometry system available which did not make contact with the patients eye. This will allow a much larger group of surgeons to access the latest formula and should improve both intraocular lens.
In our study, 2 out of 4 methods holladay 2 and shammas formula evaluated in eyes with previous hyperopic lasikprk met the benchmark standards set in normal eyes. Intraocular lens power calculation after incisional and. Accuracy of intraocular lens power prediction using the. Data transfer to holladay iol consultant holladay 2 formula option a plus the new iolmaster with software version 4. Comparison of formula accuracy for intraocular lens power ca. Refractive outcomes for cataract surgery with toric intraocular lenses iols are not well described in a teaching hospital setting. Holladay 2 vs 1 the holladay 2 formula is a 7variable predictor of effective lens position elp using al, k, acd, lt, wtw, age and adult refraction before affected by the cataract. Iol power calculation formulas zeiss medical technology. Feb 05, 2012 iol master 500 and integration of the holladay 2 formula for iol calculations 1. The software contains a huge and expandable database with iols from all major. The only difference between the two is that the hyperopic version of haigisl first calculates a new corneal radius based on the myopic haigisl algorithm. I think originally it was set up for holladay 2, and jack holladay, md, now has his own axial length adjustment in the holladay iol consultant software specifically for the holladay 2 formula.
The holladay iol consultant software was used for calculation with holladay 2 formula, b whereas an online calculator was used for the barrett universal ii and rbf method. Improved predictive results is obtained with the barrett universal ii software constants, haigis ulib, srkt, holladay 2 software constants, and olsen software constants formulas in eyes with axial lengths greater than 26. Holladay, md, msee, facs page 2 of 23 3282014 jth 23 vergence formula iol al elp dpostrx v k elp 36 36. Tip lenstar how to connect to holladay iol consultant v1 1. Thus, the surgeon factor is defined as the distance from the postoperative anterior iris plane to the effective optical plane of the iol. Its also part of the holladay iol consultant software and is being implemented in the. Conclusions overall, the barrett universal ii formula, integrated to a. Figure 1 illustrates the two calculations from the holladay iol consultant software. If you are using windows xp or vista, please download an older version of the holladay consultant. The iolmaster 500 now includes the holladay 2 in its broad menu of recognized formulas for the automatic calculation of the targeted iol. The holladay iol consultant professional edition hic pro is a thirdparty software program developed, distributed and supported by jack holladay md that runs on a separate computer and provides intraocular lens power calculation, lens constant personalization and surgical outcomes analysis. If an iol should ever be found missing, it can be added. Iolmaster 500 and integration of the holladay 2 formula. Until now, using holladay 2 required transfer to an external computer as well as purchase of a separate software package.
The holladay 2 formula is now included in the iolmaster 500s broad menu of recognised formulas. Oculus to present new formulas for the pentacam axl. If your office does not have the holladay iol consultant software package, a free. Experts address questions from iol power optimization webinar. Clinical professor of ophthalmology, baylor college of medicine, houston, texas in addition to his teaching responsibilities and private practice, holladay invented the brightness acuity tester, and has also developed the holladay iol consultant, the holladay 1, 2 and refractive iol formulas and refractive surgery consultant software programs, all of which are used. Okulix is an iol power calculation software developed by dr.
Accurate measurement of the lens thickness is key to optimal iol prediction accuracy when using the latest iol calculation formulae, like barrett, olsen or holladay 2. Recommended formula usage holladay 2 formula has been considered as one of the most accurate iol formula today. Lenstar simultaneously provides all the key biometric parameters. Yes, the wangkoch adjustment can be used on holladay 2 calculations.
The holladay 2 available on holladay iol consultant software is a great formula that takes into account more variables than some of the other formulas, he said. Featuring olcr technology, lenstar is redefining optical coherence biometry. If your office does not have this software package, a trial version can be. Refractive outcomes for cataract surgery with toric. Sheridan lam reported in 2012 that measuring the lens thickness with lenstar significantly improves the iol prediction accuracy of holladay 2 and leads to a different iol. Transfer of iolmaster patient measurements to the holladay. True anterior chamber depth acd is measured between the. I use the hofferq, holladay 1, srkt, holladay 2, haigis, and barrett formulas in combination to choose the spherical power and then calculate the cylindrical power separately. Iol power calculator for cataract surgery hillrbf calculator. It provides precise measurements by providing surgeons the tools they need to optimize outcomes. The holladay 2 formula with a customized surgeon factor was routinely used with both lenses to calculate the actual iol used. The latter formula unlike the other ones has never been published and is only available as part of a software package holladay iol consultant hic. Optical coherence biometry has revolutionized cataract surgery.
Update on optical biometry and intraocular lens power. The holladay 1 formula uses the postoperative stabilized refraction value, the dioptric power of the implanted iol, and the preoperative corneal and al measurements to calculate a personalized surgeon factor. We have a passion for our profession and a worldclass reputation. Challenges and approaches in modern biometry and iol calculation. Online alcon toricol calculator barrett holladay i formula. The software can be used to calculate the lens powers of selected phakic iols. Other constants used in modern iol formulas include the acd value in binkhorst and hofferq formulas, the a 0, a 1, and a 2 constants of the haigis formula, and the surgeon factor sf in holladay formulas. It has been optimized for use with the haagstreit lenstar, using optical biometry for all axial measurements and high density autokeratometry.
There are at least 25 articles now that show the improved efficacy since we introduced the formula in 1995. All versions since january 1st, 2017 require windows 7 or newer. Bruce wallace, iii, founder and medical director of wallace eye surgery in alexandria, louisiana, is interviewed by shareef mahdavi about increased patient expectations and evolving iol options in todays cataract surgery. The newer vergencebased formula, the barrett ii universal. Iol master 500 and integration of the holladay 2 formula. In addition, this is also commonly used to refer to hicsoap holladay iol consultant and surgical outcome assessment program. Intraocular lens calculations, holladay 2 formula, iolmaster.
Confidence in biometry with the iolmaster 500 with integrated. The holladay 2 is a great choice for nearly every eye because it is a full software package that allows many types of calculations in unusual eyes and even allows for honing of individual results. This dual use of the term is sometimes a cause of confusion. The program can handle an unlimited number of iols, surgeons and patients. I utilize intraoperative aberrometry to finetune both the iols spherical power and the axis, but i rarely change the cylindrical power unless i am using aberrometry. Biometry for intraocular lens iol power calculation eyewiki. With 100 million power calculations performed worldwide, the iolmaster is the gold standard in cataract biometry with precision that satisfies the. This was determined in the article by melles and holladay in ophthalmology in the december electronic version.
The hillrbf calculator is an advanced, selfvalidating method for iol power selection employing pattern recognition and sophisticated data interpolation. Clinical results using the holladay 2 intraocular lens power. Iolmaster 500 and integration of the holladay 2 formula for iol calculations 8 shareef mahdavi sm2 strategic pleasanton, ca 7the iolmaster, first launched as a novel approach to obtain anterior segment size was directly related to axial g biometric data, has evolved over the past decade to this. The holladay 2 al adjusted formula was calculated using the holladay iol consultant software, b and the olsen formula was calculated with the phacooptics software. Comparison of formula accuracy for intraocular lens power. Double k correction method iol calculation formulas hoffer q holladay srk t.
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