Toric Lenticule Implantation for Correction of Hyperopia and Astigmatism Following Small Incision Lenticule Intrastromal Keratoplasty With the Triple Marking Method

Liu, Shengtao; Zhang, Xiaoxue; Zhou, Xingtao

doi:10.3928/1081597x-20211117-01

Cited by 9 publications

(9 citation statements)

References 29 publications

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“…Several previous clinical research reports have suggested that LIKE has a certain potential in correcting moderate to high hyperopia [5][6][7][8]10]. Our previous study (unpublic data) and Brar et al's [11] study have found that LIKE is more advantageous in terms of stability after correcting hyperopia.…”

Section: Discussionmentioning

confidence: 59%

Effective Optical Zone Diameter, Decentration and High-Order Aberrations Following LIKE in Correcting Moderate to High Hyperopia

Zhang,

Chen,

et al. 2024

Preprint

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Background To compare the changes in effective optical zone (EOZ), centration offset and higher-order aberrations between femtosecond laser–assisted lenticule intrastromal keratoplasty (LIKE) and femtosecond-assisted laser in-situ keratomileusis (LASIK) for correcting hyperopia. Methods This is a retrospective unpaired nested case-control study reviewing data of series cases for hyperopia treatment in our department from 2018 to 2023. It mainly includes two surgeries and sets up two groups: LIKE and Hyperopic-LASIK group. Data primarily includes corrected minimum hyperopia ≥ + 1.00D and examination results within three months of follow-up at least. Results Cases included in LIKE group were mainly corrected for moderate-to-high- hyperopia (SEQ = + 6.14D), and in HLASIK group were corrected for low-to-moderate- hyperopia (SEQ = + 3.54D). The programmed optical zone diameter in LIKE was significantly smaller than postoperative result in HLASIK (6.27mm VS. 6.56mm). Through a novel measuring method of EOZ based on the ImageJ software, EOZ diameter obtained after LIKE procedure was significantly larger than that obtained after HLASIK (5.22mm VS. 4.61mm). The centration offset of the EOZ generated by LIKE was similar to that in HLASIK (0.27mm VS. 0.24mm). In LIKE, 95% of eyes had decentration within 0.5mm. The negative induction of corneal asphericity and spherical aberration after LIKE was significant, but even if it was correcting the higher hyperopia, that still has no significant difference with HLASIK. Conclusion Compared with HLASIK, LIKE has the potential to get larger EOZ and relative natural corneal morphology in correcting moderate to high hyperopia. And we propose a novel method for analyzing EOZ, which will help to improve the efficiency, accuracy, and convenience of graphical analysis.

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Section: Discussionmentioning

confidence: 59%

Effective Optical Zone Diameter, Decentration and High-Order Aberrations Following LIKE in Correcting Moderate to High Hyperopia

Zhang,

Chen,

et al. 2024

Preprint

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“…Lenticules can be utilized in eyes with more than simple hyperopia [ 13 ]. A retrospective study investigated 15 patients with hyperopia and astigmatism, who underwent SMILE to correct astigmatism and then utilized a donor lenticule, as an inlay to treat the hyperopia with a maximum follow-up of 1 year, showing eight eyes (42.1%) gaining at least one-line CDVA [ 35 ].…”

Section: Resultsmentioning

confidence: 99%

Allogenic Lenticular Implantation for Correction of Refractive Error and Ectasia: Narrative Review

Moshirfar,

Stoakes,

Bruce

et al. 2023

Ophthalmol Ther

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Introduction Intrastromal lenticule implantation is a promising treatment option for corneal pathologies, from refractive error to ectasia. In this narrative review, we intend to feature up-to-date literature supporting the use of lenticular tissue, a compelling method that can be customized for a variety of applications, providing an additional source of donor tissue for treating corneal diseases. Methods We searched databases PubMed, Mendeley, and Scopus last accessed 10 May 2023, for literature on stromal lenticules and narrowed based on relevance. Review articles, animal studies, ex vivo studies, and book chapters were excluded, while assessable and relevant articles published in English were included. Results Storage methods from using fresh lenticules to dehydration have proven successful, with cryopreservation maintaining structure and cellular viability for up to 10 years. Successful use of lenticules for treatment of numerous pathologies including corneal ectasias, hyperopia, and presbyopia with additional insight into the treatment of corneal ulcers and perforations are highlighted in this narrative review. Conclusion Lenticular implantation is an innovative and advantageous treatment for various ocular pathologies, offering increased bioavailability, flexibility, and customization for patients. They can treat previously untreatable diseases and serve as a replacement for synthetic implants, with promising outcomes worldwide. Lenticular implantation has the potential to become a leading approach in ophthalmologic surgery. Further studies should aim to provide evidentiary support for a standardization of lenticule banking.

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“…Second, we adopted only the lenticule to correct the spherical power of the hyperopic eyes. Because Liu et al 20 reported a significant decrease in refractive astigmatism among patients with hyperopia and hyperopic astigmatism caused by toric lenticules, the efficacy and safety of toric lenticules for patients with iatrogenic hyperopia and high astigmatism should be evaluated further.…”

Section: Discussionmentioning

confidence: 99%

Lenticule Intrastromal Keratoplasty for the Correction of Iatrogenic High Hyperopia

Lin,

Han,

Liu

et al. 2023

Cornea

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Purpose: The aim of this study was to evaluate the safety, efficacy, and predictability of lenticule intrastromal keratoplasty (LIKE) for the correction of iatrogenic high hyperopia. Methods: Three patients (4 eyes) were referred to our department because of overcorrection of myopia induced by femtosecond laser-assisted in situ keratomileusis. All eyes exhibited hyperopia (between +4.00 and +8.00 D) and thin corneas ranging from 307 to 378 μm. Because of the regression of the use of laser ablation to correct high hyperopia and thin corneas, we initially adopted LIKE to correct iatrogenic high hyperopia in all 4 eyes. The uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), manifest refraction, corneal topography, and anterior segment optical coherence tomography findings were recorded during each follow-up evaluation. Results: No postoperative complications, such as interface haze and opacification, were observed in the 4 eyes during each follow-up evaluation, with an average follow-up of 9.50 months. All eyes had significantly improved UDVA postoperatively. A total of 3 eyes achieved an UDVA of 20/25 or better while the other 1 eye had an UDVA of 20/40 postoperatively. In addition, 2 of the 4 eyes had a postoperative UDVA equal to or better than preoperative CDVA. No eyes lost any CDVA lines. All 4 eyes were within ±0.50 D of the spherical power (intended target of 0). The central corneal thickness and curvature of the anterior corneal surface in all 4 eyes increased postoperatively. Anterior segment optical coherence tomography revealed that the lenticule was transparent, with no wrinkles or offsets, during each follow-up evaluation. Conclusions: LIKE for the correction of iatrogenic hyperopia has good efficacy and safety. Although an extremely thin cornea after overcorrection may not be suitable for hyperopic laser enhancement, LIKE is a good choice because of its good predictability and ability to restore the normal corneal structure.

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Toric Lenticule Implantation for Correction of Hyperopia and Astigmatism Following Small Incision Lenticule Intrastromal Keratoplasty With the Triple Marking Method

Cited by 9 publications

References 29 publications

Effective Optical Zone Diameter, Decentration and High-Order Aberrations Following LIKE in Correcting Moderate to High Hyperopia

Effective Optical Zone Diameter, Decentration and High-Order Aberrations Following LIKE in Correcting Moderate to High Hyperopia

Allogenic Lenticular Implantation for Correction of Refractive Error and Ectasia: Narrative Review

Lenticule Intrastromal Keratoplasty for the Correction of Iatrogenic High Hyperopia

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