The Effect of Induced Intraocular Straylight on Perimetric Tests

Aging leads to impaired visual function, which can affect driving—a very visually demanding task—and has a direct impact on an individual’s quality of life if their license is withdrawn. This study examined the associations between age-related vision changes and simulated driving performance. To this end, we attempted to determine the most significant visual parameters in terms of evaluating elderly drivers’ eyesight. Twenty-one younger drivers (aged 25–40) were compared to 21 older drivers (aged 56–71). Study participants were assessed for visual acuity, contrast sensitivity, halos, and intraocular straylight, which causes veiling luminance on the retina and degrades vision. Driving performance was evaluated using a driving simulator. The relationships between simulated driving performance and the visual parameters tested were examined with correlation analyses and linear regression models. Older drivers presented impairment in most visual parameters (p < 0.05), with straylight being the most significantly affected (we also measured the associated effect size). Older drivers performed significantly worse (p < 0.05) in the simulator test, with a markedly lower performance in lane stability. The results of the multiple linear regression model evidenced that intraocular straylight is the best visual parameter for predicting simulated driving performance (R2 = 0.513). Older drivers have shown significantly poorer results in several aspects of visual function, as well as difficulties in driving simulator performance. Our results suggest that the non-standardized straylight evaluation could be significant in driver assessments, especially at the onset of age-related vision changes.

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Intraocular straylight and contrast sensitivity after LASIK

Acta Ophthalmologica Scandinavica ◽

10.1111/j.1600-0420.2007.01063_2934.x ◽

2007 ◽

Vol 85 ◽

pp. 0-0

Author(s):

R MICHAEL ◽

A OSPINO ◽

J GIOINO ◽

A RECANCOF ◽

RI BARRAQUER

Keyword(s):

Contrast Sensitivity ◽

Intraocular Straylight

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Comparison of optical and psychophysical methods to measure intraocular straylight

Acta Ophthalmologica ◽

10.1111/j.1755-3768.2014.1777.x ◽

2014 ◽

Vol 92 ◽

pp. 0-0

Author(s):

A PENNOS ◽

HS GINIS ◽

P ARTAL

Keyword(s):

Intraocular Straylight

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Compact optical integration instrument to measure intraocular straylight

Biomedical Optics Express ◽

10.1364/boe.5.003036 ◽

2014 ◽

Vol 5 (9) ◽

pp. 3036 ◽

Cited By ~ 21

Author(s):

Harilaos Ginis ◽

Onurcan Sahin ◽

Alexandros Pennos ◽

Pablo Artal

Keyword(s):

Intraocular Straylight ◽

Optical Integration

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Analysis of Intraocular Straylight, Especially in Relation to Age

Optometry and Vision Science ◽

10.1097/00006324-199502000-00003 ◽

1995 ◽

Vol 72 (2) ◽

pp. 52-59 ◽

Cited By ~ 118

Author(s):

THOMAS J. T. P. VAN DEN BERG

Keyword(s):

Intraocular Straylight

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Changes in Intraocular Straylight and Visual Acuity with Age in Cataracts of Different Morphologies

Journal of Ophthalmology ◽

10.1155/2017/5649532 ◽

2017 ◽

Vol 2017 ◽

pp. 1-12 ◽

Cited By ~ 1

Author(s):

Sonia Gholami ◽

Nicolaas J. Reus ◽

Thomas J. T. P. van den Berg

Keyword(s):

Visual Acuity ◽

Literature Review ◽

Control Group ◽

Posterior Subcapsular Cataract ◽

Visual Functions ◽

Severe Loss ◽

Intraocular Straylight ◽

The Mean

Purpose. To investigate the significance of difference in straylight of cataract eyes with different morphologies, as a function of age and visual acuity.Methods. A literature review to collect relevant papers on straylight, age, and visual acuity of three common cataract morphologies leads to including five eligible papers for the analysis. The effect of morphology was incorporated to categorize straylight dependency on the two variables. We also determined the amount of progression in a cataract group using a control group.Results. The mean straylight was 1.22 log units ± 0.20 (SD) in nuclear (592 eyes), 1.26 log units ± 0.23 in cortical (776 eyes), and 1.48 log units ± 0.34 in posterior subcapsular (75 eyes) groups. The slope of straylight-age relationship was 0.009 (R2=0.20) in nuclear, 0.012 (R2=0.22) in cortical, and 0.014 (R2=0.11) in posterior subcapsular groups. The slope of straylight-visual acuity relationship was 0.62 (R2=0.25) in nuclear, 0.33 (R2=0.13) in cortical, and 1.03 (R2=0.34) in posterior subcapsular groups.Conclusion. Considering morphology of cataract provides a better insight in assessing visual functions of cataract eyes, in posterior subcapsular cataract, particularly, in spite of notable elevated straylight, visual acuity might not manifest severe loss.

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Effect of Glistening-Free Intraocular Lens on Intraocular Straylight

Journal of the Korean Ophthalmological Society ◽

10.3341/jkos.2014.55.7.1001 ◽

2014 ◽

Vol 55 (7) ◽

pp. 1001 ◽

Cited By ~ 2

Author(s):

Min Ji Kang ◽

Hyung Bin Hwang ◽

Sung Kun Chung

Keyword(s):

Intraocular Lens ◽

Intraocular Straylight

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Comparison of the Retinal Straylight in Pseudophakic Eyes with PMMA, Hydrophobic Acrylic, and Hydrophilic Acrylic Spherical Intraocular Lens

Journal of Ophthalmology ◽

10.1155/2014/340759 ◽

2014 ◽

Vol 2014 ◽

pp. 1-6 ◽

Cited By ~ 3

Author(s):

Ya-wen Guo ◽

Jun Li ◽

Hui Song ◽

Xin Tang

Keyword(s):

Cataract Surgery ◽

Intraocular Lens ◽

Pupil Size ◽

Significant Difference ◽

Intraocular Straylight ◽

Hydrophobic Acrylic ◽

Retinal Straylight

Purpose. To investigate the intraocular straylight value after cataract surgery.Methods. In this study, 76 eyes from 62 patients were subdivided into three groups. A hydrophobic acrylic, a hydrophilic acrylic, and a PMMA IOL were respectively, implanted in 24 eyes, 28 eyes, and 24 eyes. Straylight was measured using C-Quant at 1 week and 1 month postoperatively in natural and dilated pupils.Results. The hydrophilic acrylic IOLs showed significantly lower straylight values than those of the hydrophobic acrylic IOLs in dilated pupils at 1 week and 1 month after surgery (P<0.05). However, the straylight values of the hydrophilic acrylic IOLs were the lowest among the three IOL groups. No significant difference was observed in straylight between 1 week and 1 month postoperatively in each group with natural and dilated pupils (P>0.05). Moreover, no significant difference was found in straylight between natural and dilated pupils in each group at 1 week and 1 month postoperatively (P>0.05).Conclusions. Although the hydrophobic acrylic IOL induced more intraocular straylight, straylight differences among the 3 IOLs were minimal. Pupil size showed no effect on intraocular straylight; the intraocular straylight was stable 1 week after surgery.

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