Intraocular lens power calculations in patients with extreme myopia

Zaldivar, Roberto; Shultz, Mitchell C.; Davidorf, Jonathan M; Holladay, Jack T.

doi:10.1016/s0886-3350(00)00367-9

Cited by 108 publications

(80 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Many studies reported that the SRK/T formula, which we used for IOL power calculation, is appropriate for biometry in high myopia of ≥27mm axial length. 2, 8, 10 Zaldivar et al 11 reported that 92% of eyes were within ±1.0D when using SRK/T, and concluded that in eyes with axial lengths ≥ 27.0 mm, current third-and fourth-generation lens calculation formulas have a tendency to over minus patients between -1.0 and -4.0 D, leaving patients with postoperative hyperopia. Similarly, Tsang et al 2 found that SRK/T formula showed a slight tendency toward resultant hyperopia, resulting in a postoperative hyperopic refractive error.…”

Section: Discussionmentioning

confidence: 99%

The Analysis of Refraction and Accommodation of Extreme Myopia with Cataract after Phacoemulsification and IOL Implantation

Al-Wesabi¹,

Yang²,

Li³

et al. 2016

IOSR

View full text Add to dashboard Cite

Abstract:Background: To assess the refractive status of cataract patients with extreme myopia and to measure their accommodative capability after monofocal IOL implantation. Design: Prospective non-randomized study conducted at Tianjin Medical University Eye Centre.Participants: 18 patients with 34 extreme myopic eyes ≥27mm axial length), and 14 patients with 27 non-myopic eyes that had uneventful phacoemulsification and monofocal IOL implantation. Methods:The accommodation amplitude of the two groups was compared pre-and post-operatively using subjective minus-lenses-to-blur method. In the extreme myopic group, the postoperative target refraction was selected to be myopic, and they were evaluated for predicted postoperative spherical power consistency.

show abstract

Section: Discussionmentioning

confidence: 99%

The Analysis of Refraction and Accommodation of Extreme Myopia with Cataract after Phacoemulsification and IOL Implantation

Al-Wesabi¹,

Yang²,

Li³

et al. 2016

IOSR

View full text Add to dashboard Cite

show abstract

“…The performance of SRK-T, Hoffer Q, Holladay 1 and Holladay 2 formulae in eyes with axial lengths longer than or equal to 27.0mm was assessed by Zaldivar et al 6 It was concluded that current third-and fourth-generation lens calculation formulae have a tendency to over minus patients between −1.0 and −4.0 D. The formulae appear to perform better for plus-power IOL implantation than for minus-power IOL implantation. Wang JK, et al 7 concluded IOL power calculated using the Haigis formula predicted the best refractive outcome in long eyes.…”

Section: Age 43 To 69 Yearsmentioning

confidence: 99%

Predictive Accuracy of Various Iol Power Calculation Formulae in High Axial Myopia: A Prospective Comparative Study

Thakur¹,

Saxena²,

Jain³

et al. 2016

jemds

View full text Add to dashboard Cite

PURPOSETo compare the accuracy of Intraocular Lens (IOL) power calculation formulae in high axial myopia. MATERIAL AND METHODS27 eyes of 22 patients with axial length between 26mm to 30mm were studied. The eyes were divided in to two groups, Group 1 with AL 26-28mm consisting of 23 eyes and Group 2 with AL 28-30mm consisting of four eyes. The predictive accuracy of four formulae SRK-T, Hoffer Q, Haigis and Holladay 2 were evaluated and compared. The statistical analysis was carried out with SPSS Software 21.0 version with P value >0.05 considered significant. RESULTSThe predictive capability within ±1 D of these formulae in Group 1 is 88% with SRK-T, 87% with Hoffer Q, 88% with Haigis and 91% with Holladay 2 and within ±0.5 D is 61%, 61%, 69% and 73% respectively. In Group 2 which consisted of 4 eyes with AL between 28-30mm the results were 83%, 83%, 84%, 90%, 59%, 61%, 70%, 71% respectively. CONCLUSIONThe performance of SRK-T, Hoffer Q and Haigis was comparable for target refraction of ±1.0 D, whereas Haigis and Holladay 2 gave relatively better results for target refraction of ±0.5 D for Group 1 and Haigis and Holladay 2 performed better for Group 2.

show abstract

“…Die SRK-T-Formel ist eine etablierte Methode zur Biometrie bei Patienten mit hoher Achsenmyopie und hinsichtlich refraktiver Ergebnisse der Haigis-oder Holladay-1-Formel ähnlich [11,15,18,20]. Haigis [4] hat aber kürzlich die Bedeutung unterschiedlicher A-Konstanten für Positiv-Dioptrien-und Negativ-Dioptrien-IOLs hervorgehoben.…”

Section: Diskussionunclassified

Refraktive Vorhersagbarkeit und Stabilität von 3-teiligen vs. 1-teiligen Intraokularlinsen bei hoher Achsenmyopie

et al. 2012

View full text Add to dashboard Cite

show abstract

Intraocular lens power calculations in patients with extreme myopia

Cited by 108 publications

References 9 publications

The Analysis of Refraction and Accommodation of Extreme Myopia with Cataract after Phacoemulsification and IOL Implantation

The Analysis of Refraction and Accommodation of Extreme Myopia with Cataract after Phacoemulsification and IOL Implantation

Predictive Accuracy of Various Iol Power Calculation Formulae in High Axial Myopia: A Prospective Comparative Study

Refraktive Vorhersagbarkeit und Stabilität von 3-teiligen vs. 1-teiligen Intraokularlinsen bei hoher Achsenmyopie

Contact Info

Product

Resources

About