Changes to Corneal Aberrations and Vision After Monovision in Patients With Hyperopia After Using a Customized Aspheric Ablation Profile to Increase Corneal Asphericity (Q-factor)

Courtin, Romain; Saad, Alain; Grise-Dulac, Alice; Guilbert, Emmanuel; Gatinel, Damien

doi:10.3928/1081597x-20160810-01

Cited by 33 publications

(27 citation statements)

References 29 publications

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“…The Zyoptix aspheric ablation (ASA) profile (Technolas 217z laser platform with 100 Hz) is a Q factor-adjusted individual ablation profile that may reduce the postoperative wavefront aberration. Both profiles have been shown to be effective, safe, and efficient [12–14]. The Triple-A profile has the advantages of both the TS profile and the ASA profile and reduces the ablation time with 1.3 second per 1 D of myopia.…”

Section: Discussionmentioning

confidence: 99%

Clinical Evaluation of LASEK for High Myopia Correction between the Triple-A Profile and the Zyoptix Tissue Saving Profile

Shi

Sun

et al. 2019

Journal of Ophthalmology

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Purpose. To compare the effects of correcting high myopia using the MEL®90 Triple-A profile LASEK at a 500 Hz pulse rate (Triple-A group) versus the Zyoptix tissue-saving ablations of Technolas 217z laser platform at 100 Hz (TS group). Methods. This retrospective study included 50 eyes in the Triple-A group and 42 eyes in the TS group with manifest refraction spherical equivalent (MRSE) of −6 diopters (D) to −10 D. We compared uncorrected distance visual acuity, MRSE, corrected distance visual acuity, and postoperative complications at 1 month, 3 months, and 6 months. Results. At 6 months after refractive surgery, the efficacy index of Triple-A group was significantly higher than that of the TS group (1.03 ± 0.12 vs 1.00 ± 0.11, P=0.04). The MRSE postoperatively in the Triple-A group was significantly lower than that in the TS group (0.25 ± 0.18 vs 0.38 ± 0.23, P<0.01). The safety indices in the two groups were almost the same after 6 months of surgery (1.03 ± 0.07 vs 1.04 ± 0.11, P=0.63). The proportion of eyes which achieved ±0.13 D was significantly higher in the Triple-A group than that in the TS group at 1 month (80% vs 59.5%, P=0.03), 3 months (82% vs 61.9%, P=0.03) and 6 months (84% vs 64.3%, P=0.03). The changes in refraction 6 months after surgery comparing with 1 month after surgery were 0.12 ± 0.10 D in the Triple-A group and 0.13 ± 0.08 D in the TS group (P=0.56). All (100%) of the patients in the Triple-A group and 50% of the patients in the TS group had a UDVA of 20/16 at 6 months after surgery (P<0.01). The induced spherical aberrations and total HOAs in the Triple-A group were significantly lower than those in the TS group (0.17 ± 0.02 μm vs 0.23 ± 0.02 μm, P<0.01; 0.20 ± 0.04 μm vs 0.39 ± 0.03 μm, P<0.01) at 6 months after surgery. The mean reduced corneal thickness was 113.06 ± 10.5 μm in the Triple-A profile group and 121.43 ± 23.46 μm in the TS group (P=0.02). No patient in either group had haze and high intraocular pressure 6 months after surgery. Conclusion. For treatment of high-myopia patients, the Triple-A profile was more effective, predictable, and accurate than the Zyoptix tissue-saving profile. Meanwhile, the Triple-A profile had less induced spherical aberrations, total HOAs, and cornea ablation depth than the Zyoptix tissue-saving profile. Patients in the Triple-A group with 500 Hz pulse rate treatment achieved superior results. The two surgical procedures were equivalent in terms of safety and stability.

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Section: Discussionmentioning

confidence: 99%

Clinical Evaluation of LASEK for High Myopia Correction between the Triple-A Profile and the Zyoptix Tissue Saving Profile

Shi

Sun

et al. 2019

Journal of Ophthalmology

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“…Efficacy, defined as an UDVA of 20/20 or better, ranged from 24%30 to 95.7% 19. Safety, as the loss of two or more Snellen lines of CDVA, ranged from 0%12,19,22,24,25,29 to 6.5% 21. In the present study, 88% of eyes achieved a predictability within ±0.50 D, 91% of the eyes with the plano target achieved efficacy within ≤20/20, and no eyes lost two or more Snellen lines of CDVA.…”

Section: Discussionmentioning

confidence: 99%

<p>Patient satisfaction and self-reported dry eye symptoms in hyperopic patients treated with femtosecond laser in situ keratomileusis</p>

Mäkinen¹,

Huhtala²,

Pietilä³

et al. 2019

OPTH

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Purpose To study self-reported patient satisfaction and dry eye symptoms in hyperopic correction with femtosecond laser-assisted in situ keratomileusis (FS-LASIK). Patients and methods Ninety-eight eyes (53 patients) were treated with FS-LASIK for hyperopia. Patients’ self-reported dry eye symptoms and satisfaction with near and far vision were graded on the visual analog scale (VAS) preoperatively and 1 month postoperatively. Results Ninety-one percent of the eyes with the plano target (54 eyes) achieved an uncorrected distance visual acuity of 20/20 or better. Predictability, defined as spherical equivalent refraction within ±0.5 D of target, was 88% of all eyes. None of the eyes lost two or more Snellen lines of corrected distance visual acuity. There was no significant change in the self-reported dry eye sensation (VAS score from 2.7±2.0 to 2.8±2.0; P =0.66). In 44 monovision patients, satisfaction with both far vision (from 71.2±19.8 to 89.2±8.7; P <0.0001) and near vision (from 51.7±26.2 to 89.3±13.2; P <0.0001) increased significantly. In nine emmetropic patients, satisfaction with neither far vision nor near vision was significantly improved, although there was a clear tendency (from 73.7±23.7 to 86.9±15.3; P =0.22, and from 58.9±29.1 to 81.6±17.4; P =0.11, respectively). In the monovision patient group, far vision satisfaction decreased when dry eye symptoms increased. Monovision patients, as predicted, were more satisfied with their near vision, when postoperative spherical equivalent from target was on the myopic side. Conclusion FS-LASIK correction of hyperopia significantly improved patient satisfaction with both near and far vision in monovision patients. Hyperopic patients had no significant changes in postoperative dry eye symptoms compared to preoperative values.

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“…The combination of induced asphericity and micro-monovision with laser blended technique has had good visual and safety outcomes [25, 27–30], but the tolerance to micro-monovision may be inconvenient especially in patients with mild presbyopia, who are less tolerant to a larger degree of anisometropia than patients with advanced presbyopia [25]. …”

Section: Discussionmentioning

confidence: 99%

“…The combination of different techniques for the correction of presbyopia (monovision, multifocality, asphericity modification) is a trending option [30] seeing that they benefit from the best qualities of each procedure.…”

Section: Discussionmentioning

confidence: 99%

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Corneal compensation of presbyopia: PresbyLASIK: an updated review

Vargas-Fragoso

Alió

2017

Eye and Vis

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The main purpose of this review is to compare and analyze the results of the main PresbyLASIK approaches; central and peripheral.SummaryA comprehensive research was conducted in PUBMED using keywords like “presbyopia correction”, “PresbyLASIK”, “Corneal multifocality”, “Laser blended vision”. We reviewed the PresbyLASIK technique, uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), uncorrected near visual acuity (UNVA), and corrected near visual acuity (CNVA), and compared the differences between the techniques.

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Changes to Corneal Aberrations and Vision After Monovision in Patients With Hyperopia After Using a Customized Aspheric Ablation Profile to Increase Corneal Asphericity (Q-factor)

Abstract: For hyperopic patients, combining the customized corneal aspheric ablation profile with monovision is safe, effective, and reproducible, inducing intended changes in corneal spherical aberrations. [J Refract Surg. 2016;32(11):734-741.].

Cited by 33 publications

References 29 publications

Clinical Evaluation of LASEK for High Myopia Correction between the Triple-A Profile and the Zyoptix Tissue Saving Profile

Clinical Evaluation of LASEK for High Myopia Correction between the Triple-A Profile and the Zyoptix Tissue Saving Profile

<p>Patient satisfaction and self-reported dry eye symptoms in hyperopic patients treated with femtosecond laser in situ keratomileusis</p>

Corneal compensation of presbyopia: PresbyLASIK: an updated review

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