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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.


Related in: MedlinePlus

Intensity spectra of RGB colors and white of an LED monitor (Flatron IPS235P, LG Electronics Inc., Seoul, South Korea) measured with a spectrometer (HR4000, Ocean Optics, Dunedin, FL/USA).
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fig5: Intensity spectra of RGB colors and white of an LED monitor (Flatron IPS235P, LG Electronics Inc., Seoul, South Korea) measured with a spectrometer (HR4000, Ocean Optics, Dunedin, FL/USA).

Mentions: A spectrometer (HR4000, Ocean Optics, Dunedin, FL/USA) was used to measure separately the intensity spectrum of each RGB color of a monitor (Flatron IPS235P, LG Electronics Inc., Seoul, South Korea) (Figure 5). The most intense color (blue) was selected to be normalized to 1 and the other two colors were normalized using the same factor. Addition of these three spectra yielded the spectrum for white. Measuring the spectrum for white itself yielded the same spectrum and, since the two curves were identical, we plotted only one curve for white.


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)

Intensity spectra of RGB colors and white of an LED monitor (Flatron IPS235P, LG Electronics Inc., Seoul, South Korea) measured with a spectrometer (HR4000, Ocean Optics, Dunedin, FL/USA).
© Copyright Policy - open-access
Related In: Results  -  Collection

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

fig5: Intensity spectra of RGB colors and white of an LED monitor (Flatron IPS235P, LG Electronics Inc., Seoul, South Korea) measured with a spectrometer (HR4000, Ocean Optics, Dunedin, FL/USA).
Mentions: A spectrometer (HR4000, Ocean Optics, Dunedin, FL/USA) was used to measure separately the intensity spectrum of each RGB color of a monitor (Flatron IPS235P, LG Electronics Inc., Seoul, South Korea) (Figure 5). The most intense color (blue) was selected to be normalized to 1 and the other two colors were normalized using the same factor. Addition of these three spectra yielded the spectrum for white. Measuring the spectrum for white itself yielded the same spectrum and, since the two curves were identical, we plotted only one curve for white.

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