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Related Experiment Video

Updated: Jul 14, 2026

$Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter$

Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter

Published on: September 16, 2025

Variables affecting refractive outcome following LASIK for myopia.

M H Feltham¹, R Wong, R Wolfe

¹Mark Feltham Optometrists, London Circuit, Canberra, Australian Capital Territory, Australia.

Eye (London, England)

|May 19, 2007

Summary

The NIDEK EC-5000 excimer laser demonstrated a higher success rate for LASIK surgery in myopia compared to the Technolas 217. Factors like pre-operative refractive error and patient age also influenced outcomes.

More Related Videos

Correction of Presbyopia by Monocular Bi-Aspheric Ablation Profile

Published on: September 20, 2024

Related Experiment Videos

Last Updated: Jul 14, 2026

$Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter$

Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter

Published on: September 16, 2025

Correction of Presbyopia by Monocular Bi-Aspheric Ablation Profile

Published on: September 20, 2024

Area of Science:

Ophthalmology
Refractive Surgery
Laser Vision Correction

Background:

Laser-Assisted In Situ Keratomileusis (LASIK) is a common procedure for correcting myopia.
Understanding factors influencing refractive outcomes is crucial for patient satisfaction and surgical planning.

Purpose of the Study:

To investigate factors affecting refractive outcomes after LASIK for myopia.
To compare the refractive success rates of two excimer laser platforms: Technolas 217 and NIDEK EC 5000.

Main Methods:

A retrospective analysis of 674 uncomplicated myopic LASIK surgeries performed by a single surgeon.
Stratified random sampling matched 302 patients for each laser group (Technolas 217 vs. NIDEK EC 5000).
Refractive success was defined as within ±0.50 DS of target refraction at 3 months; stepwise logistic regression identified predictors of failure.

Main Results:

The NIDEK EC 5000 achieved a higher success rate (88%) compared to the Technolas 217 (78%).
Predictors of refractive failure included pre-operative myopia above -5.00 DS, age over 40, and surgery with the Technolas laser.

Conclusions:

Both excimer laser systems can achieve successful refractive outcomes in most myopic LASIK cases.
Patient-specific factors (age, refractive error) and the choice of excimer laser platform can significantly influence refractive outcomes.