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Visualization of IOL Material-Induced Changes in Retinal Color Stimulus.

Reiss S, Sperlich K, Kunert M, Guthoff RF, Stolz H, Jünemann A, Stachs O - J Ophthalmol (2016)

Bottom Line: Conclusions.The developed technique provides an approach for determining IOL-specific transmittance behavior and subsequently its influence on the retinal color stimulus.Problems of altered color perception are occasionally reported after cataract surgery and these become obvious with the visualization procedure developed here.

View Article: PubMed Central - PubMed

Affiliation: Institute of Physics, University of Rostock, Albert-Einstein-Straße 23-24, 18059 Rostock, Germany; Department of Ophthalmology, University of Rostock, Doberaner Straße 140, 18057 Rostock, Germany.

ABSTRACT
Purpose. Different IOL materials, particularly blue-light filtering materials, have different spectral transmittance characteristics. The color stimuli, which influence retinal receptors objectively, have consequently implications for color perception. We report on the quantitative determination of IOL-specific transmittance characteristics and present a method visualizing the resultant changes in color stimulus. Methods. A setup was realized to quantify IOL-absorption in a range of 390-780 nm. To visualize the influence of the different spectral transmittance characteristics an algorithm was developed, which converts RGB-pixel values of images into spectra, which performs the corresponding transmittance correction, reconverts to RGB, and reconstructs the image. IOLs of hydrophobic acrylate and hydrophilic acrylate with a hydrophobic surface in each case with/without blue-light filter were examined. Results. Assessment of the reference images verifies the suitability of the pipeline. Evaluation of the transmittance spectra reveals differences of material- and manufacturer-specifics, which are capable of inducing considerable changes in color perception, particularly in the blue color range and mixed colors involving blue. Conclusions. The developed technique provides an approach for determining IOL-specific transmittance behavior and subsequently its influence on the retinal color stimulus. Problems of altered color perception are occasionally reported after cataract surgery and these become obvious with the visualization procedure developed here.

No MeSH data available.


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(a) Influence of the specific transmittance curves on the reference image for hydrophobic IOL materials and hydrophilic IOL materials with a hydrophobic coating, in each case with blue-light filter. (b) Difference between reference image and the image affected by a special transmittance curve for each IOL (for enhanced visualization, the brightness value was increased by a factor two).
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fig10: (a) Influence of the specific transmittance curves on the reference image for hydrophobic IOL materials and hydrophilic IOL materials with a hydrophobic coating, in each case with blue-light filter. (b) Difference between reference image and the image affected by a special transmittance curve for each IOL (for enhanced visualization, the brightness value was increased by a factor two).

Mentions: Visualization of retinal color stimuli changes, based on the IOL-specific transmittance curves, was determined and is shown in Figures 9 and 10. The transmittance characteristics were applied to the reference image according to the conversion algorithm described above. Minimal color stimulus changes were found to be induced by hydrophobic acrylate without blue-light filter as well as by hydrophilic acrylate with a hydrophobic coating without and with blue-light filter (Figures 9 and 10, resp.). Hydrophobic acrylate lenses with blue-light filter, however, showed a significant change, especially in the blue color range (Figure 10).


Visualization of IOL Material-Induced Changes in Retinal Color Stimulus.

Reiss S, Sperlich K, Kunert M, Guthoff RF, Stolz H, Jünemann A, Stachs O - J Ophthalmol (2016)

(a) Influence of the specific transmittance curves on the reference image for hydrophobic IOL materials and hydrophilic IOL materials with a hydrophobic coating, in each case with blue-light filter. (b) Difference between reference image and the image affected by a special transmittance curve for each IOL (for enhanced visualization, the brightness value was increased by a factor two).
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4940547&req=5

fig10: (a) Influence of the specific transmittance curves on the reference image for hydrophobic IOL materials and hydrophilic IOL materials with a hydrophobic coating, in each case with blue-light filter. (b) Difference between reference image and the image affected by a special transmittance curve for each IOL (for enhanced visualization, the brightness value was increased by a factor two).
Mentions: Visualization of retinal color stimuli changes, based on the IOL-specific transmittance curves, was determined and is shown in Figures 9 and 10. The transmittance characteristics were applied to the reference image according to the conversion algorithm described above. Minimal color stimulus changes were found to be induced by hydrophobic acrylate without blue-light filter as well as by hydrophilic acrylate with a hydrophobic coating without and with blue-light filter (Figures 9 and 10, resp.). Hydrophobic acrylate lenses with blue-light filter, however, showed a significant change, especially in the blue color range (Figure 10).

Bottom Line: Conclusions.The developed technique provides an approach for determining IOL-specific transmittance behavior and subsequently its influence on the retinal color stimulus.Problems of altered color perception are occasionally reported after cataract surgery and these become obvious with the visualization procedure developed here.

View Article: PubMed Central - PubMed

Affiliation: Institute of Physics, University of Rostock, Albert-Einstein-Straße 23-24, 18059 Rostock, Germany; Department of Ophthalmology, University of Rostock, Doberaner Straße 140, 18057 Rostock, Germany.

ABSTRACT
Purpose. Different IOL materials, particularly blue-light filtering materials, have different spectral transmittance characteristics. The color stimuli, which influence retinal receptors objectively, have consequently implications for color perception. We report on the quantitative determination of IOL-specific transmittance characteristics and present a method visualizing the resultant changes in color stimulus. Methods. A setup was realized to quantify IOL-absorption in a range of 390-780 nm. To visualize the influence of the different spectral transmittance characteristics an algorithm was developed, which converts RGB-pixel values of images into spectra, which performs the corresponding transmittance correction, reconverts to RGB, and reconstructs the image. IOLs of hydrophobic acrylate and hydrophilic acrylate with a hydrophobic surface in each case with/without blue-light filter were examined. Results. Assessment of the reference images verifies the suitability of the pipeline. Evaluation of the transmittance spectra reveals differences of material- and manufacturer-specifics, which are capable of inducing considerable changes in color perception, particularly in the blue color range and mixed colors involving blue. Conclusions. The developed technique provides an approach for determining IOL-specific transmittance behavior and subsequently its influence on the retinal color stimulus. Problems of altered color perception are occasionally reported after cataract surgery and these become obvious with the visualization procedure developed here.

No MeSH data available.


Related in: MedlinePlus