Explanipedia

Comparison of biometry measurements and intraocular lens formula accuracy of two swept-source optical coherence tomography biometers Open

Stephen Stewart, Ye King Clarence See, Tun Kuan Yeo · 2025

Predictive Correction Model for Corneal Back Surface Astigmatism With <span>IOLMaster700</span> Keratometry Data in a Cataractous Population Open

Achim Langenbucher, Pia Lyngby Hoffmann, Alan Cayless, Nóra Szentmáry, Kamran M. Riaz , et al. · 2025

Background To develop and validate various models to predict total keratometry ( TK ) power vector components TKC0 and TKC45 from classical keratometry (K) KC0 and KC45 based on a large dataset of pre cataract surgery IOLMaster 700 measure…

A double-blind, randomized controlled pilot study comparing the safety of intracameral levofloxacin and intracameral cefazolin in patients undergoing cataract surgery Open

Yan Tong Koh, Tun Kuan Yeo, Zhi Hong Toh, John Wong, Wei Kiong Ngo , et al. · 2025

Patterns of Corneal Astigmatism in Eyes Post Myopic Laser Keratorefractive Surgery Open

Aaron Wei Wen Ng, Stephen Stewart, Tun Kuan Yeo · 2025

PCA orientation of post M-LVC eyes is similar to published data of virgin eyes. This reinforces the assumption made in toric intraocular lens power formulae that posterior corneal astigmatism in these eyes share the same characteristics as…

Effect of Posterior Corneal Surgically Induced Astigmatism on Toric Intraocular Lens Power Calculations Open

Stephen Stewart, Tun Kuan Yeo, Salissou Moutari, Richard N. McNeely, Jonathan E. Moore · 2025

This study demonstrated postoperative changes in posterior corneal astigmatism magnitude and the orientation of the steep meridian. However, accounting for posterior keratometric SIA in the Barrett Toric formula does not improve refractive…

Intraocular lens calculation in an eye with intrastromal corneal ring segments for myopia: case report Open

Jane Lim, Bryan K. Monson, Tun Kuan Yeo · 2025

Introduction: This case report describes the approach and outcomes of intraocular lens (IOL) power calculation methods in a patient with previous intrastromal corneal ring segments (ICRSs) for myopia treatment who underwent cataract surger…

Accuracy of Toric Intraocular Lens Formulas With Measured Posterior Corneal Astigmatism of Different Orientations Open

Stephen Stewart, Tun Kuan Yeo, Salissou Moutari, Richard N. McNeely, Jonathan E. Moore · 2024

When the steep axis of posterior corneal astigmatism is not vertically orientated, the use of measured posterior keratometry values improves prediction accuracy.

The Influence of Lens Position, Vault Prediction, and Posterior Cornea on Phakic Posterior Chamber Intraocular Lens Power Open

Jascha Wendelstein, Tun Kuan Yeo, Sarah Hinterberger, Theo Seiler, H. Burkhard Dick , et al. · 2024

This study underscores the utility of implementing ELP concepts based on linear regression models into pIOL power calculation. Linear regression based ELP models offered substantial advantages for achieving desired refractive outcomes, esp…

Emmetropia Verifying Optical (EVO) Formula Open

Tun Kuan Yeo · 2024

The origins of the Emmetropia Verifying Optical (EVO) formula (versions 1.0 and 2.0) are described. This is a thick lens formula based on Gaussian optics principles; it considers the anterior and posterior corneal curvatures, central corne…

Differences Between Keratometry and Total Keratometry Measurements in a Large Dataset Obtained With a Modern Swept Source Optical Coherence Tomography Biometer Open

Jascha Wendelstein, Peter Hoffmann, Kenneth J. Hoffer, Achim Langenbucher, Oliver Findl , et al. · 2023

This large-scale study underscores the similarity between mean K and TK values in healthy eyes, with rare clinical implications for IOL power calculation. Noteworthy differences were observed in astigmatism values between K and TK. Future …

Acute Isolated Near Vision Difficulty in Patients With COVID-19 Infection Open

Thirugnanam Umapathi, Kelvin Zhenghao Li, Chee Fang Chin, Kalpana Vijakumar, Glorijoy Shi En Tan , et al. · 2021

We describe 3 COVID-19 patients with acute near vision difficulty. Case 1, a 46-year-old man, presented with severe, generalized headache, fever, sore throat, anosmia, dysgeusia, and chest discomfort. The following day, nasopharyngeal swab…

VRF-G, a New Intraocular Lens Power Calculation Formula: A 13-Formulas Comparison Study Open

Diogo Hipólito‐Fernandes, Maria Elisa Luís, Pedro Gil, Vítor Maduro, João Feijão , et al. · 2020

New generation formulas may help us in achieving better refractive results, lowering the variance in accuracy in extreme eyes - Kane, EVO 2.0 and VRF-G formulas are promising candidates to fulfil that goal.

Accuracy of intraocular lens formulas using total keratometry in eyes with previous myopic laser refractive surgery Open

Tun Kuan Yeo, Wee Jin Heng, Don C.K. Pek, John Wong, Han Bor Fam · 2020

Re: Kane et al.: A comparison of the accuracy of 6 modern toric intraocular lens formulas (Ophthalmology. 2020;127:1472-1486) Open

Tun Kuan Yeo · 2020

Immune recovery uveitis in HIV patients with cytomegalovirus retinitis in the era of HAART therapy—a 5-year study from Singapore Open

Tun Hang Yeo, Tun Kuan Yeo, Elizabeth Wong, Rupesh Agrawal, Stephen C. Teoh · 2016

Dataset of aqueous humor cytokine profile in HIV patients with Cytomegalovirus (CMV) retinitis Open

Jayant Venkatramani Iyer, Rupesh Agrawal, Tun Kuan Yeo, Dinesh Visva Gunasekeran, Praveen Kumar Balne , et al. · 2016

A prospective case-control study to investigate retinal microvascular changes in acute dengue infection Open

Petrina Tan, David Chien Lye, Tun Kuan Yeo, Carol Y. Cheung, Tun-Linn Thein , et al. · 2015

Dengue infection can affect the microcirculation by direct viral infection or activation of inflammation. We aimed to determine whether measured retinal vascular parameters were associated with acute dengue infection. Patients with acute d…

Tun Kuan Yeo YOU? Author Swipe