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Retinal straylight and light distortion phenomena in normal and post-LASIK eyes

  • Refractive Surgery
  • Published:
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Abstract

Purpose

To assess the relationship between measures of light distortion and retinal straylight in normal and post-LASIK subjects.

Design

Cross-sectional, non-randomized, masked observational case series

Setting

Clinica Oftalmologica Novovision, Madrid, Spain.

Methods

Thirty eyes from 30 healthy subjects (mean age 33.9 ± 8.3 years old; mean spherical equivalent (MSE) −2.06 ± 1.40 D) and thirty six eyes from thirty six refractive surgery patients (mean age 36.1 ± 7.7 years old; mean preop MSE −3.43 ± 2.23 D) were examined with the Starlights and the C-Quant straylightmeter in a case-control study.

Results

The age of both treated and control groups was not statistically different (p > 0.05). Statistically significant differences between controls and post-LASIK eyes were found for luminous distortion index (LDI), but not for retinal straylight. Correlation analysis yielded significant correlation between retinal straylight Log(s) values and BCVA measures (r = 0.379, p = 0.002). Control subjects showed significant correlation between MSE and retinal straylight Log(s) values (r = -0.650, p < 0.001), while post-LASIK eyes showed a significant correlation between LDI and Log(s) values (r = 0.338, p = 0.044) and between Log(s) values and BCVA (r = 0.460, p = 0.005). Correlation between measures obtained by both methods was higher after LASIK than in control eyes, although values were quite scattered in any case.

Conclusion

Light distortion phenomena and retinal straylight measures are correlated in both normal and postsurgical eyes. Both parameters are increased in LASIK subjects compared to control non-operated subjects.

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Acknowledgement

This research was supported in part by a Universitat de Valencia Research Grant (#UV-AE-08-2291#) and a Ministry of Science and Innovation of Spain (#JC2008-00078) to Alejandro Cerviño, from the Fundação para a Ciência e Tecnologia of Portugal through a Grant to Jose Manuel Gonzalez-Meijome (#PTDC/SAU-BEB/098392/2008#), and from the Ministry of Science and Innovation of Spain (Red Temática de Investigacion en Optometria, SAF2008-01114-E).

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Correspondence to Alejandro Cerviño.

Additional information

None of the authors has a commercial interest in any of the instruments used in the present study.

The authors indicate no financial support or financial conflict of interest involved in the design and conduct of the study (A.C., J.M.G-M, C.V., T.F-B, S.G-L..); collection, management, analysis, and interpretation of the data (A.C., J.M.G-M, C.V., T.F-B, S.G-L..); and preparation, review, or approval of the manuscript (A.C., J.M.G-M, C.V., T.F-B, S.G-L.). The study was approved by the Clinica Oftalmologica Novovision review board. The study protocol was approved by and all study procedures adhered to the recommendations of the declaration of Helsinki. Written consent was obtained from all participants.

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Cerviño, A., Villa-Collar, C., Gonzalez-Meijome, J.M. et al. Retinal straylight and light distortion phenomena in normal and post-LASIK eyes. Graefes Arch Clin Exp Ophthalmol 249, 1561–1566 (2011). https://doi.org/10.1007/s00417-010-1583-7

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  • DOI: https://doi.org/10.1007/s00417-010-1583-7

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