COMPARISON OF REFRACTIVE OUTCOME USING INTRAOPERATIVE BIOMETRY AND PARTIAL COHERENCE INTERFEROMETRY IN SILICONE OIL-FILLED EYES

Retina ◽  
2009 ◽  
Vol 29 (1) ◽  
pp. 64-68 ◽  
Author(s):  
SAMIR MOHAMED EL-BAHA ◽  
TAREK SAMIR HEMEIDA
Keyword(s):  
Silicone Oil ◽  
Partial Coherence ◽  
Refractive Outcome ◽  
Partial Coherence Interferometry

Biometry and refractive outcome of eyes filled with silicone oil by standardized echography and partial coherence interferometry

2005 ◽  
Vol 243 (10) ◽  
pp. 967-972 ◽  
Author(s):  
Johannes Nepp ◽  
Katharina Krepler ◽  
Kerstin Jandrasits ◽  
Wolfgang Hauff ◽  
Georg Hanselmayer ◽  
...  
Keyword(s):  
Silicone Oil ◽  
Partial Coherence ◽  
Refractive Outcome ◽  
Partial Coherence Interferometry

Refractive outcome of cataract surgery using partial coherence interferometry and ultrasound biometry

2002 ◽  
Vol 28 (2) ◽  
pp. 230-234 ◽  
Author(s):  
Barabara Kiss ◽  
Oliver Findl ◽  
Rupert Menapace ◽  
Matthias Wirtitsch ◽  
Vanessa Petternel ◽  
...  
Keyword(s):  
Cataract Surgery ◽  
Partial Coherence ◽  
Refractive Outcome ◽  
Partial Coherence Interferometry

scholarly journals Development and Verification of an Adjustment Factor for Determining the Axial Length Using Optical Biometry in Silicone Oil-Filled Eyes

Diagnostics ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 163
Author(s):  
Gerd U. Auffarth ◽  
Tadas Naujokaitis ◽  
Louise Blöck ◽  
Anna Daghbashyan ◽  
Jan Meis ◽  
...  
Keyword(s):  
Axial Length ◽  
Silicone Oil ◽  
Systematic Difference ◽  
Partial Coherence ◽  
Prospective Clinical Study ◽  
Partial Coherence Interferometry ◽  
Coefficients Of Variation ◽  
Strong Linear Correlation ◽  
The Mean ◽  
Iolmaster 700

The aim of this prospective clinical study was to establish and verify an adaptation for axial length (AL) measurement in silicone oil (SO)-filled pseudophakic eyes with a Scheimpflug and partial coherence interferometry (PCI)-based biometer. The AL was measured with a Pentacam AXL (OCULUS Optikgeräte GmbH, Wetzler, Germany) and IOLMaster 700 (Carl Zeiss Meditec, Jena, Germany). The coefficients of variation (CoV) and the mean systematic difference (95% confidence interval (CI)) between the devices were calculated. After implementing a setting for measuring AL in tamponaded eyes with a Pentacam based on data of 29 eyes, another 12 eyes were examined for verification. The mean AL obtained with the Pentacam was 25.53 ± 1.94 mm (range: 21.70 to 30.76 mm), and with IOLMaster, 24.73 ± 1.97 mm (ranged 20.84 to 29.92 mm), resulting in a mean offset of 0.80 ± 0.08 mm (95% CI: 0.77, 0.83 mm), p < 0.001. The AL values of both devices showed a strong linear correlation (r = 0.999). Verification data confirmed good agreement, with a statistically and clinically non-significant mean difference of 0.02 ± 0.04 (95% CI: −0.01, 0.05) mm, p = 0.134. We implemented a specific adaptation for obtaining reliable AL values in SO-filled eyes with the Pentacam AXL.

scholarly journals Intraocular lens power calculation for plus and minus lenses in high myopia using partial coherence interferometry

2021 ◽  
Author(s):  
Matthias Fuest ◽  
Niklas Plange ◽  
David Kuerten ◽  
Hannah Schellhase ◽  
Babac A. E. Mazinani ◽  
...  
Keyword(s):  
Axial Length ◽  
Absolute Error ◽  
Intraocular Lenses ◽  
Partial Coherence ◽  
Power Calculation ◽  
Partial Coherence Interferometry ◽  
Intraocular Lens Power Calculation ◽  
Hyperopic Shift ◽  
Lens Power ◽  
Lens Power Calculation

Abstract Purpose We assessed the accuracy of lens power calculation in highly myopic patients implanting plus and minus intraocular lenses (IOL). Methods We included 58 consecutive, myopic eyes with an axial length (AL) > 26.0 mm, undergoing phacoemulsification and IOL implantation following biometry using the IOLMaster 500. For lens power calculation, the Haigis formula was used in all cases. For comparison, refraction was back-calculated using the Barrett Universal II (Barrett), Holladay I, Hill-RBF (RBF) and SRK/T formulae. Results The mean axial length was 30.17 ± 2.67 mm. Barrett (80%), Haigis (87%) and RBF (82%) showed comparable numbers of IOLs within 1 diopter (D) of target refraction. Visual acuity (BSCVA) improved (p < 0.001) from 0.60 ± 0.35 to 0.29 ± 0.29 logMAR (> 28-days postsurgery). The median absolute error (MedAE) of Barrett 0.49 D, Haigis 0.38, RBF 0.44 and SRK/T 0.44 did not differ. The MedAE of Haigis was significantly smaller than Holladay (0.75 D; p = 0.01). All median postoperative refractive errors (MedRE) differed significantly with the exception of Haigis to SRK/T (p = 0.6): Barrett − 0.33 D, Haigis 0.25, Holladay 0.63, RBF 0.04 and SRK/T 0.13. Barrett, Haigis, Holladay and RBF showed a tendency for higher MedAEs in their minus compared to plus IOLs, which only reached significance for SRK/T (p = 0.001). Barrett (p < 0.001) and RBF (p = 0.04) showed myopic, SRK/T (p = 002) a hyperopic shift in their minus IOLs. Conclusions In highly myopic patients, the accuracies of Barrett, Haigis and RBF were comparable with a tendency for higher MedAEs in minus IOLs. Barrett and RBF showed myopic, SRK/T a hyperopic shift in their minus IOLs.

scholarly journals Refractive outcome of cataract surgery in eyes filled with silicone oil

2019 ◽  
Author(s):  
Piotr Kanclerz ◽  
Christoph Leisser ◽  
Andrzej Grzybowski ◽  
Paweł Lipowski
Keyword(s):  
Cataract Surgery ◽  
Silicone Oil ◽  
Spherical Equivalent ◽  
Refractive Outcome ◽  
Spherical Equivalent Refraction ◽  
Cataract Development ◽  
Oil Injection ◽  
Phacoemulsification Cataract Surgery

Abstract Background Cataract development is common in phakic eyes filled with silicone oil (SO), necessitating subsequent cataract removal. This study evaluated the refractive outcome in eyes filled with SO undergoing phacoemulsification cataract surgery (PCS). Methods This retrospective study evaluated patients with SO tamponade who were scheduled for PCS. Results Subjects (n=26) were followed-up for 29.5 ± 13.9 months after cataract surgery. The median spherical equivalent refraction (SER) was +5.3 D (interquartile range [IQR] +2.9 to +6.7) before PCS, and +3.4 D (IQR +2.0 to +4.4) after PCS. Within the follow-up period retinal reattachment after SO removal was achieved in 15 out of 26 eyes (57.7%). In 13 eyes assessment of refraction after SO-removal was possible, and showed a myopic shift of -4.6 D (IQR -2.9 to -7.3) in the SER. After SO removal, 5 of 13 eyes (38.5%) were within ±1.0 D of the target refraction, while 9 out of 13 eyes (69.2%) were within ±2.0 D. Conclusions The refractive outcome after PCS for eyes filled with SO is less predictable than that for normal eyes. Some of the eyes undergoing silicone oil injection may require long-term tamponade.

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