Moria M2 Single Use Microkeratome Head in 100 Consecutive LASIK Procedures

Kanellopoulos, Anastasios John; Lawrence, H; Kleiman, Lynda

doi:10.3928/1081-597x-20050901-09

Cited by 11 publications

(4 citation statements)

References 18 publications

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“…In our study, the M2 single use head tended to cut less (106Ϯ17 µm) than the manufacturer expected (120 µm), although with a large range (65 to 152µm). The M2 90-µm single use head seems to cut thinner fl aps with smaller variability, comparable not only to other Moria heads 14,15,[17][18][19][20][21] but also to other microkeratomes with different heads. 17,19,20,[22][23][24][25][26] The mean fl ap thickness in the second (left) eye was approximately 5.5% thinner than in the fi st (right) eye (103Ϯ15 µm compared to 109Ϯ18 µm), which is in agreement with other studies.…”

Section: Resultssupporting

confidence: 60%

“…The mean fl ap diameter was 9.4Ϯ0.3 mm (range: 8.5 to 9.9 mm) and the mean hinge chord size was 4.4Ϯ0.4 mm (range: 3.8 to 6 mm) ( Figs 3 and 4). 14 The concept of a disposable microkeratome has been investigated and introduced in clinical practice by a number of manufacturers, but it was not until the fi rst encouraging results with the Moria M2 single use 130 head 15 had it been shown that with an adequate design or plastic material choice, the increased fl ap-related complications with other disposable microkeratomes 16 can be overcome.…”

Section: Resultsmentioning

confidence: 99%

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LASIK Flap Characteristics Using the Moria M2 Microkeratome With the 90-µm Single Use Head

Aslanides

Tsiklis²,

Astyrakakis³

et al. 2007

J Refract Surg

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PURPOSE: To evaluate the accuracy and consistency of corneal fl ap thickness, horizontal diameter, and hinge size with the Moria M2 90-µm single use head (Moria, Antony, France). METHODS: Fifty-two myopic patients (104 eyes), mean age 32.6 years, underwent bilateral LASIK with a superior hinged fl ap using the Moria M2 microkeratome (90µm single use head). Prospective evaluation included fl ap thickness (subtraction method), diameter, hinge size, interface particles, intraoperative complications, and visual recovery. RESULTS: The mean preoperative spherical equivalent refraction was Ϫ5.72Ϯ2.59 diopters (D) (range: Ϫ2.88 to Ϫ10.75 D) and Ϫ5.84Ϯ2.73 D (range: Ϫ3.13 to Ϫ9.38 D) for right and left eyes, respectively. The mean preoperative central pachymetry was 548Ϯ24 µm and 547Ϯ25 µm for right and left eyes, respectively. The mean preoperative steepest K was 44.12Ϯ1.28 D and 44.41Ϯ1.27 D for right and left eyes, respectively. Corneal diameter (white to white) was 12Ϯ0.4 mm and 11.9Ϯ0.4 mm for right and left eyes, respectively. The mean postoperative fl ap thickness was 109Ϯ18 µm (range: 67 to 152 µm) and 103Ϯ15 µm (range: 65 to 151 µm) for right and left eyes, respectively. The mean postoperative fl ap diameter was 9.4Ϯ0.3 mm (expected mean according to the nomogram given by the company was 9.5 mm). The mean postoperative hinge chord was 4.4Ϯ0.4 mm (expected mean 4.2 mm). No interface particles were detected on slit-lamp examination. CONCLUSIONS: The Moria M2 90-µm single use head is safe with good predictability for LASIK fl ap creation. [

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Section: Resultssupporting

confidence: 60%

Section: Resultsmentioning

confidence: 99%

LASIK Flap Characteristics Using the Moria M2 Microkeratome With the 90-µm Single Use Head

Aslanides

Tsiklis²,

Astyrakakis³

et al. 2007

J Refract Surg

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“…The most popular MKs for LASIK are based on the oscillating blade principle. The Moria M2 (Antony, France) is a popular compact automated MK with mechanical stop designed for maximum safety [ 10 ]. Currently, five femtosecond (FS) lasers are licensed for LASIK.…”

Section: Discussionmentioning

confidence: 99%

Visumax femtolasik versus Moria M2 microkeratome in mild to moderate myopia: efficacy, safety, predictability, aberrometric changes and flap thickness predictability

Torky

Zafiri²,

Khattab

et al. 2017

BMC Ophthalmol

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IntroductionThis is an interventional prospective clinical study which was conducted to evaluate the efficacy, safety, predictability, ocular aberrations, and flap thickness predictability of Visumax femtosecond laser (FSL) compared to Moria M2 microkeratome (MK) in mild to moderate myopia.MethodsThis study included 60 eyes who were divided into two groups. Thirty eyes in group (I) in which the flap was created with Visumax FSL, while in group II (30 eyes) the Moria M2 MK was used. Keratometric, refractive, and aberrometric measurements were compared preoperatively and 3 months postoperatively. The intraoperative subtraction pachymetry (the SP 100 Handy pachymeter (Tomey, Nagoya, Japan) was used for preoperative pachymetry and flap thickness measurement.ResultsNo significant difference was found between the two groups in regards to postoperative manifest sphere, spherical equivalent, astigmatism, safety indices nor ocular aberrations. Twenty six eyes (86.6%) in group I and 23 eyes in group II (76.6%) were within ±0.5D of the intended correction and 23 eyes (76.6%) in group I and 15 eyes in group II (50%) were within ±0.25D of the intended correction. In group I, the mean postoperative actual flap thickness was 100.12 ± 16.1 μm (81 to 122 μm), while in group II, it was 104.6 ± 20.1 μm (62 to 155 μm). The difference was statistically significant (p = 0.001).ConclusionsBoth Visumax and Moria M2 MK are safe and effective in treating myopia with no statistically significant difference in induction of ocular aberrations but with potential advantage for Visumax regarding predictability. More accurate flap thickness is achieved with Visumax femtolasik.Trial registrationThis study was retrospectively registered on 19/6/2017. Trial registration number NCT03193411, clinicalTrials.gov.

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“…При измерении диаметра роговичного клапана, сформированного с помощью фемтосекундного лазера, стандартное отклонение составляет не более 0,2 мм [18]. Аналогичный морфометрический параметр клапана, полученный по результатам работы микрокератома, может достигать 0,4 мм, что говорит о большей девиации значений диаметра клапана при использовании микрокерато-ма [19]. Это приводит к повышенному риску повреждения новообразованных сосудов на периферии роговицы с последующим кровотечением и увеличением времени операции, а также к воздействию эксимерного лазера за пределами стромального ложа роговицы и возможному врастанию эпителия под клапан.…”

Section: Introductionunclassified

Morphometric Parameters of the Corneal Flap after FemtoLASIK Using Various Femtosecond Laser

Doga¹,

Mushkova²,

Семенов³

et al. 2018

Ophthalmology in Russia

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Purpose:to make a comparison of the corneal flap parameters after the FemtoLASIK procedure using femtolaser systems Femto Visum (Russia) and Femto LDV Z6 (Switzerland).Patients and methods.The study was carried out in 192 eyes from 192 patients with mild and moderate myopia who had undergone FemtoLASIK prodecure. Group 1 (Femto Visum) included 98 eyes (n = 98) on which flap were formed using femtolaser Femto Visum (“Optosystems”, Russia), group 2 (Femto LDV Z6) included 94 eyes (n = 94) and Femto LDV Z6 was used (“Ziemer Ophthalmic Systems AG”, Switzerland). The Femto Visum and Femto LDV Z6 groups were comparable in terms of pre-operative data (age, sex, corneal curvature, central corneal thickness, sphere, cylinder, spherical equivalent) (p > 0.05). The intended flap thickness was 100 μm and diameter was 9.0 mm in both groups. One month after surgery the achieved flap thickness in the horizontal and vertical meridians (14 measurement points) and the flap diameter in the horizontal meridian were measured using Visante OCT (Carl Zeiss, Germany), also we determined the shape of the flap and the mean deviation of the values from morphometric parameters of the corneal flap relative to the intended values.Results.In group 1 (Femto Visum), the total average thickness of the flap was 98.89 ± 3.96 μm with the mean deviation 2.91 ± 2.91 μm, the mean flap diameter was 8.96 ± 0.13 mm with the mean deviation 0.11 ± 0.07 mm, in group 2 (Femto LDV Z6) the same parameters were 99.11 ± 3.89 μm, 2.99 ± 2.64 μm and 8.91 ± 0.14 mm, 0.13 ± 0.10 mm, respectively. The configuration of the corneal flap was uniform in both groups. For all studied parameters it was no any statistically significant differences between studied groups (p > 0.05, Student’s t-test).Conclusions.The Femto Visum and Femto LDV Z6 femtolaser systems allow to shape the uniform and highly predictable corneal flap morphometric parameters, similar measurements were obtained from both systems.

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Moria M2 Single Use Microkeratome Head in 100 Consecutive LASIK Procedures

Cited by 11 publications

References 18 publications

LASIK Flap Characteristics Using the Moria M2 Microkeratome With the 90-µm Single Use Head

LASIK Flap Characteristics Using the Moria M2 Microkeratome With the 90-µm Single Use Head

Visumax femtolasik versus Moria M2 microkeratome in mild to moderate myopia: efficacy, safety, predictability, aberrometric changes and flap thickness predictability

Morphometric Parameters of the Corneal Flap after FemtoLASIK Using Various Femtosecond Laser

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