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OPHTHALMIC IMAGE
Year : 2022  |  Volume : 2  |  Issue : 3  |  Page : 857

Blue illusions on slit-lamp microscopy through yellow intraocular lens explained


Department of Ophthalmology, Dr. Rajendra Prasad Centre for Ophthalmic Sciences, AIIMS, New Delhi, India

Date of Web Publication16-Jul-2022

Correspondence Address:
Dr. Amber A Bhayana
Dr. R P Centre, AIIMS, New Delhi - 110 029
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ijo.IJO_2762_21

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How to cite this article:
Bhayana AA, Wahi A, Khokhar SK, Prasad P, Venkatesh P. Blue illusions on slit-lamp microscopy through yellow intraocular lens explained. Indian J Ophthalmol Case Rep 2022;2:857

How to cite this URL:
Bhayana AA, Wahi A, Khokhar SK, Prasad P, Venkatesh P. Blue illusions on slit-lamp microscopy through yellow intraocular lens explained. Indian J Ophthalmol Case Rep [serial online] 2022 [cited 2022 Oct 6];2:857. Available from: https://www.ijoreports.in/text.asp?2022/2/3/857/351151



Blue/violet illusional slits are often visualized during slit-lamp examination of a pseudophakic patient with hydrophobic acrylic yellow intraocular lens in situ [Figure 1]a. The reason for this appearance is selective reflection of lower wavelength blue light by the yellow intra-ocular lens (IOL).[1] We support the hypothesis based on the fact that blue reflection is similarly seen when white light is shone across blue filtering glasses [Figure 1]b.
Figure 1: (a) Oblique slit-lamp illumination showing yellow IOL in situ with illusional blue slits (arrow); (b) light from indirect ophthalmoscopy shone across blue filtering glasses – blue light reflected back (arrow)

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Conflicts of interest

There are no conflicts of interest.



 
  References Top

1.
Yang H, Afshari NA. The yellow intraocular lens and the natural ageing lens. Curr Opin Ophthalmol 2014;25:40-3.  Back to cited text no. 1
    


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