Commentary: Cataract surgery in retinitis pigmentosa

Sahay, Pranita; Kumawat, Devesh

doi:10.4103/ijo.ijo_598_21

Indian Journal of Ophthalmology

2021

DOI: 10.4103/ijo.ijo_598_21

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Commentary: Cataract surgery in retinitis pigmentosa

Pranita Sahay¹,

Devesh Kumawat

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2022

2024

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Cited by 3 publications

References 8 publications

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Quantitative assessment of corneal elasticity distribution after FS‐LASIK using optical coherence elastography

Han,

Zhang,

Shi

et al. 2024

Journal of Biophotonics

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Quantifying corneal elasticity after femtosecond laser‐assisted in situ keratomileusis (FS‐LASIK) procedure plays an important role in improving surgical safety and quality, since some latent complications may occur ascribing to changes in postoperative corneal biomechanics. Nevertheless, it is suggested that current research has been severely constrained due to the lack of an accurate quantification method to obtain postoperative corneal elasticity distribution. In this paper, an acoustic radiation force optical coherence elastography system combined with the improved phase velocity algorithm was utilized to realize elasticity distribution images of the in vivo rabbit cornea after FS‐LASIK under various intraocular pressure levels. As a result, elasticity variations within and between the regions of interest could be identified precisely. This is the first time that elasticity imaging of in vivo cornea after FS‐LASIK surgery was demonstrated, and the results suggested that this technology may hold promise in further exploring corneal biomechanical properties after refractive surgery.

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Quantitative assessment of corneal elasticity distribution after FS‐LASIK using optical coherence elastography

Han,

Zhang,

Shi

et al. 2024

Journal of Biophotonics

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Preclinical Safety and Efficacy Assessments for Novel Femtosecond Lasers in Corneal Refractive Surgery

et al. 2022

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Preclinical safety requirements and test methods have been standardized over time to guide medical device developers in the path needed to manufacture safe devices and achieve regulatory approval. Today, femtosecond lasers are commonly used in cataract and refractive surgeries. Currently, an industry standard to guide developers in preclinical testing of ophthalmic lasers does not exist. Consequently, the data presented in regulatory submissions may vary between manufacturers, making the regulatory review process more ambiguous. Here, the authors present a comprehensive discussion of preclinical test methods applied to the evaluation of an ophthalmic laser. We include in vitro and ex vivo models, as well as an in vivo rabbit model subject to corneal refractive treatments, for consideration in a preclinical safety evaluation plan. Scientific rationale to support the ocular endpoints of evaluation in the rabbit model to demonstrate safety is also presented and discussed.

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Diffuse lamellar keratitis as a rare complication of diamond burr superficial keratectomy for recurrent corneal erosion: a case report

Lin

2022

BMC Ophthalmol

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Background To present a case with a history of laser in situ keratomileusis (LASIK) developing diffuse lamellar keratitis (DLK) after diamond burr superficial keratectomy (DBSK) for recurrent corneal erosion (RCE). Case presentation A 25-year-old man presented with multiple episodes of RCE one year after femtosecond-assisted LASIK for myopia correction. Because conservative treatments failed to halt the repetitive attack of RCE, he underwent epithelial debridement and DBSK. However, severe foreign body sensation and blurred vision developed on postoperative day one. The next day, slit lamp biomicroscopy revealed DLK manifested as diffuse granular infiltrates at the flap interface. After topical corticosteroid treatment, the inflammation resolved gradually, and his vision recovered to 20/20. Conclusions Diffuse lamellar keratitis is a rare post-LASIK complication that can be triggered by DBSK, which causes impairment of the corneal epithelial integrity and subsequent inflammation at the flap interface. For post-LASIK patients with RCE, alternative treatments, such as anterior stromal puncture, may be considered to avoid extensive disruption of corneal epithelium and DLK development depending on the size and the location of the lesions.

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Commentary: Cataract surgery in retinitis pigmentosa

Cited by 3 publications

References 8 publications

Quantitative assessment of corneal elasticity distribution after FS‐LASIK using optical coherence elastography

Quantitative assessment of corneal elasticity distribution after FS‐LASIK using optical coherence elastography

Preclinical Safety and Efficacy Assessments for Novel Femtosecond Lasers in Corneal Refractive Surgery

Diffuse lamellar keratitis as a rare complication of diamond burr superficial keratectomy for recurrent corneal erosion: a case report

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