Lasers in refractive surgery: history, present, and future

Kugler, Lance; Wang, Ming X.

doi:10.1364/ao.49.0000f1

Cited by 20 publications

(13 citation statements)

References 38 publications

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“…LASIK outcomes appear to have improved in safety and efficacy with the evolutions described earlier1,13 in both refractive outcomes and induced high-order aberrations 5,14,15…”

Section: Introductionmentioning

confidence: 69%

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Topography-modified refraction (TMR): adjustment of treated cylinder amount and axis to the topography versus standard clinical refraction in myopic topography-guided LASIK

Kanellopoulos¹

2016

OPTH

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PurposeTo evaluate the safety, efficacy, and contralateral eye comparison of topography-guided myopic LASIK with two different refraction treatment strategies.SettingPrivate clinical ophthalmology practice.Patients and methodsA total of 100 eyes (50 patients) in consecutive cases of myopic topography-guided LASIK procedures with the same refractive platform (FS200 femtosecond and EX500 excimer lasers) were randomized for treatment as follows: one eye with the standard clinical refraction (group A) and the contralateral eye with the topographic astigmatic power and axis (topography-modified treatment refraction; group B). All cases were evaluated pre- and post-operatively for the following parameters: refractive error, best corrected distance visual acuity (CDVA), uncorrected distance visual acuity (UDVA), topography (Placido-disk based) and tomography (Scheimpflug-image based), wavefront analysis, pupillometry, and contrast sensitivity. Follow-up visits were conducted for at least 12 months.ResultsMean refractive error was −5.5 D of myopia and −1.75 D of astigmatism. In group A versus group B, respectively, the average UDVA improved from 20/200 to 20/20 versus 20/16; post-operative CDVA was 20/20 and 20/13.5; 1 line of vision gained was 27.8% and 55.6%; and 2 lines of vision gained was 5.6% and 11.1%. In group A, 27.8% of eyes had over −0.50 diopters of residual refractive astigmatism, in comparison to 11.7% in group B (P<0.01). The residual percentages in both groups were measured with refractive astigmatism of more than −0.5 diopters.ConclusionTopography-modified refraction (TMR): topographic adjustment of the amount and axis of astigmatism treated, when different from the clinical refraction, may offer superior outcomes in topography-guided myopic LASIK. These findings may change the current clinical paradigm of the optimal subjective refraction utilized in laser vision correction.

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“…LASIK outcomes appear to have improved in safety and efficacy with the evolutions described earlier1,13 in both refractive outcomes and induced high-order aberrations 5,14,15…”

Section: Introductionmentioning

confidence: 69%

“…Laser vision correction has been established over the last 2 decades as a safe and effective intervention, with Laser-assisted in situ keratomileusis (LASIK) being one of the main techniques practiced globally 1,2…”

Section: Introductionmentioning

confidence: 99%

Topography-modified refraction (TMR): adjustment of treated cylinder amount and axis to the topography versus standard clinical refraction in myopic topography-guided LASIK

Kanellopoulos¹

2016

OPTH

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“…Laser-assisted in situ keratomileusis (LASIK) is a widely accepted method for correcting the refractive error,1,2 as evidenced by the long number of publications in the peer-reviewed literature.…”

Section: Introductionmentioning

confidence: 99%

“…These improvements have further advanced the clinical outcomes of the LASIK procedure1,13 in correcting not just the spherocylindrical refractive error, but also the higher-order aberrations, by reducing the induced spherical aberration following myopic ablation 5,14,15…”

Section: Introductionmentioning

confidence: 99%

Long-term bladeless LASIK outcomes with the FS200 Femtosecond and EX500 Excimer Laser workstation: the Refractive Suite

Kanellopoulos¹,

Asimellis²

2013

OPTH

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“…In 1983, Stephen Trokel and Rangaswamy Srinivasan performed the first PhotoRefractive Keratectomy (PRK) [ Kugler and Wang, 2010 ] using excimer laser; later it became commonly known as Laser-Assisted in situ Keratomileusis (LASIK). Figure 1.4: Vision-correcting display.…”

Section: Correcting For Vision-aberrationsmentioning

confidence: 99%

Computational light field display for correcting visual aberrations

Huang

Wetzstein

Barsky

et al. 2013

ACM SIGGRAPH 2013 Posters

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Vision problems such as near-sightedness, far-sightedness, as well as others, are due to optical aberrations in the human eye. These conditions are prevalent, and the population is growing rapidly. Correcting optical aberrations is traditionally done optically using eyeglasses, contact lenses, or refractive surgeries; these are sometime not convenient or not always available to everyone. Furthermore, higher order aberrations are not correctable with eyeglasses.In this work, we introduce a new computation based aberration-correcting light field display: by incorporating the persons own optical aberration into the computation, we alter the content shown on the display, such that he or she will be able to see it in sharp focus without wearing eyewear. We analyze the image formation models; through the retinal light field projection, we find it is possible to compensate for the optical blurring on the target image by prefiltering with the inverse blur.Using off-the-shelf components, we built a light field display prototype that supports our desired inverse light field prefiltering. The results show a significant contrast improvement and resolution enhancement over prior approaches. Finally, we also demonstrate the capability to correct for higher order aberrations.

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Lasers in refractive surgery: history, present, and future

Abstract: The history of laser refractive surgery is reviewed, followed by an overview of the current state of the field as well as a look at promising future developments.

Cited by 20 publications

References 38 publications

Topography-modified refraction (TMR): adjustment of treated cylinder amount and axis to the topography versus standard clinical refraction in myopic topography-guided LASIK

Topography-modified refraction (TMR): adjustment of treated cylinder amount and axis to the topography versus standard clinical refraction in myopic topography-guided LASIK

Long-term bladeless LASIK outcomes with the FS200 Femtosecond and EX500 Excimer Laser workstation: the Refractive Suite

Computational light field display for correcting visual aberrations

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