Bilateral ring scotomas following laser in situ keratomileusis

Austin, Michael W.; Sreekantam, Sreekanth; Martin, Suzanne E.; Hill, Robert J.

doi:10.1016/j.jcrs.2006.03.016

Cited by 6 publications

(5 citation statements)

References 12 publications

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“…But this number was within the mean parameters [35]. However, there were also some case reports indicated that increased IOP with the microkeratome vacuum ring used during LASIK may have precipitated optic nerve head ischemia and defect of visual field [36, 37]. Meanwhile, a meta-analysis published in ophthalmology showed that there were no statistically significant differences in either visual outcomes or visual quality (contrast sensitivity).…”

Section: Discussionmentioning

confidence: 87%

Transient Alteration of Retinal Microvasculature after Refractive Surgery

Wang

Zhu

et al. 2020

Ophthalmic Res

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Purpose: The purpose of this study was to determine the retinal microvasculature in myopic patients after refractive surgery. Methods: Thirty-six right eyes of 36 patients who undertook femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK) were imaged using optical coherence tomography angiography preoperatively, 1-week, 1-month, and 3-month postoperation, respectively. Vessel density was analyzed after the correction of magnification, and results were correlated with clinical manifestations, including spherical equivalent (SE), amplitude of accommodation, intraocular pressure, and axial length. Results: There was a significant decrease in microvascular density 1-week postoperation compared to preoperative measurement (p < 0.05), and it recovered 1-month postoperation. Microvascular densities in superficial vascular plexus (r = 0.528, p < 0.01), deep vascular plexus (r = 0.500, p < 0.01), and retinal vascular network (r = 0.390, p < 0.05) were all positively correlated with the decrease of the SE 1-week postoperation. Conclusion: The transient alteration of the retinal microvasculature after refractive surgery appeared to recover quickly, which may not impact the visual function after FS-LASIK.

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Section: Discussionmentioning

confidence: 87%

Transient Alteration of Retinal Microvasculature after Refractive Surgery

Wang

Zhu

et al. 2020

Ophthalmic Res

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“…[ 17 18 19 ] On the other hand, tonometry or perimetry are not sensitive enough for detection of early glaucoma. [ 20 ]…”

Section: Discussionmentioning

confidence: 99%

Effect of photorefractive keratectomy on optic nerve head topography and retinal nerve fiber layer thickness measured by heidelberg retina tomograph 3

Nilforushan¹,

Azadi²,

Soudi³

et al. 2016

J Ophthalmic Vis Res

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Purpose:To determine whether photorefractive keratectomy (PRK) has a significant effect on optic nerve head (ONH) parameters and peripapillary retinal nerve fiber layer (RNFL) thickness measured by the Heidelberg Retina Tomograph 3 (Heidelberg Engineering GmbH, Heidelberg, Germany) in eyes with low to moderate myopia.Methods:This prospective, interventional case series, includes 43 consecutive myopic eyes which were assessed on the day of PRK and 3 months postoperatively using the HRT3. Among the stereometric parameters, we compared disc area, linear cup disc ratio, cup shape measure, global rim area, global rim volume, RNFL height variation contour and mean RNFL thickness; out of the Glaucoma Probability Score (GPS) we assessed changes in global value, rim steepness temporal/superior, and temporal/inferior, as well as cup size and cup depth before and after PRK.Results:Mean refractive error before and after PRK were −3.24 ± 1.31 and −0.20 ± 0.42 diopters, respectively. No significant change occurred in disc area, linear cup disc ratio, cup shape measure, rim area and rim volume among the stereometric parameters; and in rim steepness temporal/superior and rim steepness temporal/inferior in the GPS before and after PRK using the default average keratometry. However, RNFL height variation contour, mean RNFL thickness, and cup size and depth were significantly altered after PRK (P < 0.05).Conclusion:PRK can affect some HRT3 parameters. Although the most important stereometric parameters for differentiating normal, suspect or glaucomatous patients such as rim and cup measurements in stereometric parameters were not changed.

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“…Five of the 7 patients reported had risk factors for optic neuropathy, such as systemic hypertension, ocular hypertension, coronary artery disease, or a family history of glaucoma. Austin et al 33 were the only authors to conclude that the visual field defect was caused by LASIK-induced aberrations in the cornea due to the appearance of unremarkable discs and a normal peripheral retinal examination.…”

Section: Discussionmentioning

confidence: 99%