Surface Quality of Human Corneal Lenticules After SMILE Assessed Using Environmental Scanning Electron Microscopy

Ziebarth, Noël Marysa; Lorenzo, Michael A; Chow, Jessica; Cabot, Florence; Spooner, Gregory J. R.; Dishler, Jon G.; Hjortdal, Jesper; Yoo, Sonia H.

doi:10.3928/1081597x-20140513-01

Cited by 41 publications

(35 citation statements)

References 28 publications

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“…However, the applicability of these findings is confined to purely myopic corrections because the lenticules did not have cylindrical correction. 47 …”

Section: Safetymentioning

confidence: 99%

Small-incision lenticule extraction

Moshirfar¹,

McCaughey²,

Reinstein³

et al. 2015

Journal of Cataract and Refractive Surgery

177

116

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“…However, the applicability of these findings is confined to purely myopic corrections because the lenticules did not have cylindrical correction. 47 …”

Section: Safetymentioning

confidence: 99%

Small-incision lenticule extraction

Moshirfar¹,

McCaughey²,

Reinstein³

et al. 2015

Journal of Cataract and Refractive Surgery

177

116

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show abstract

“…The highest surface regularity score was achieved using the lowest pulse energy, presenting that lower pulse energy facilitates a smoother cut surface. Furthermore, smoother lenticule surfaces were reported observed using a higher frequency laser [8,21].…”

Section: Discussionmentioning

confidence: 93%

“…Based on the aforementioned investigations, a new generation VisuMax laser with settings of a 500 kHz repetition rate and a pulse energy of 130 nJ was investigated. Researchers studied the scan quality of corneal lenticules in the context of myopia treatment using the new laser system, and found that both sides of the lenticules exhibited smooth surfaces [21]. Therefore, in the current study, the exact same laser settings were used to perform hyperopia correction in SMILE, and enabled homogeneous cutting.…”

Section: Discussionmentioning

confidence: 94%

A pilot study: lenticule quality of hyperopic small incision lenticule extraction (SMILE) in rabbits

Zhao

Han

et al. 2020

BMC Ophthalmol

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Background: To evaluate lenticule surface characteristics of small incision lenticule extraction (SMILE) for hyperopia correction in rabbits. Methods: The left and right eyes of 8 rabbits were divided into two groups. The right eyes were assigned to a myopia group, and the left eyes to a hyperopia group. The rabbits received SMILE procedures with + 3.00 D and − 3.00 D correction for the hyperopia and myopia groups, respectively. Extracted lenticules were examined via scanning electron microscopy. Lenticules from odd-numbered rabbits were accessed with the anterior surface, and lenticules from even-numbered rabbits were observed with the posterior surface. A previously established scoring system was used to evaluate lenticule surface characteristics. Statistical analysis was conducted to compare the scores between the two groups. Results: All procedures were performed successfully, and the lenticules were extracted smoothly. One myopia lenticule that was facing downward was handled failed in preparation for imaging, thus 15 lenticules were ultimately graded. Twelve lenticules exhibited smooth surfaces, and regularly arranged tissue bridges were observed in almost all regions. Three lenticules exhibited a partially rough surface and irregularities affecting more than 10% of the lenticules (2 in the hyperopia group and 1 in the myopia group). Rough lenticules occurred in twice as many lenticules in the hyperopia group compared to the myopia group.Conclusions: Scan quality of lenticules after SMILE for hyperopia correction is comparable to that of myopia lenticules. The shape of hyperopic lenticule may increase the difficulty of surgical manipulation and result in surface roughness.

show abstract

“…Furthermore, smoother lenticule surfaces were reported observed using a higher frequency laser. [18,8] Based on the aforementioned investigations, a new generation VisuMax laser with settings of a 500 kHz repetition rate and a pulse energy of 130 nJ was investigated. Researchers studied the scan quality of corneal lenticules in the context of myopia treatment using the new laser system, and found that both sides of the lenticules exhibited smooth surfaces.…”

Section: Discussionmentioning

confidence: 99%

A pilot study: lenticule quality of hyperopic small incision lenticule extraction (SMILE) in rabbits

Zhang

Han

et al. 2019

Preprint

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Purpose: To evaluate lenticule surface characteristics of small incision lenticule extraction (SMILE) for hyperopia correction in. Methods: The left and right eyes of 8 rabbits were divided into two groups. The right eyes were assigned to a hyperopia group, and the left eyes to a myopia group. The rabbits received SMILE procedures with +3.00 D and –3.00 D correction for the hyperopia and myopia groups, respectively. Extracted lenticules were examined via scanning electron microscopy. Lenticules from odd-numbered rabbits were accessed with the anterior surface, and lenticules from even-numbered rabbits were observed with the posterior surface. A previously established scoring system was used to evaluate lenticule surface characteristics. Statistical analysis was conducted to compare the scores between the two groups. Results: All procedures were performed successfully, and the lenticules were extracted smoothly. One myopia lenticule that was facing downward was handled failed in preparation for imaging, thus 15 lenticules were ultimately graded. Twelve lenticules exhibited smooth surfaces, and regularly arranged tissue bridges were observed in almost all regions. Three lenticules exhibited a partially rough surface and irregularities affecting more than 10% of the lenticules (2 in the hyperopia group and 1 in the myopia group). There was no significant difference between the scores of the surfaces of the lenticules in the two groups (p > 0.05). Conclusions: The surface quality of lenticules after SMILE for hyperopia correction may be comparable to that of myopia lenticules. Future studies should concentrate on the clinical effect of human hyperopia lenticules.

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Surface Quality of Human Corneal Lenticules After SMILE Assessed Using Environmental Scanning Electron Microscopy

Abstract: Using the VisuMax laser to perform SMILE produces smooth cuts absent of surface irregularities.

Cited by 41 publications

References 28 publications

Small-incision lenticule extraction

Small-incision lenticule extraction

A pilot study: lenticule quality of hyperopic small incision lenticule extraction (SMILE) in rabbits

A pilot study: lenticule quality of hyperopic small incision lenticule extraction (SMILE) in rabbits

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