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A case of visual snow syndrome in which photophobia improved with light-blocking glasses Kenta Bando 1 , Ena Suzuki 1 , Hirotaka Ito 1 , Shuji Nakatsuka 1 , Yuta Nakano 1 , Kumiko Mokuno 1 1Department of Ophthalmology, Kariya Toyota General Hospital pp.768-774
Published Date 2024/6/15
DOI https://doi.org/10.11477/mf.1410215204
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Abstract Purpose:VSS is a syndrome in which visual symptoms such as dust storms, light snow, and photophobia persist for more than 3 months despite the absence of intracranial disease. We report a case of photophobia that was reduced with the use of TRIGUARD lens.

Case:A 17-year-old woman had been aware of floaters in her vision since June 200X, and visited our clinic in November 200X, when photophobia also occurred. Her corrected visual acuity was 1.2 in both eyes. Ophthalmologic findings were normal. Further, there were no abnormalities on optical coherence tomography, visual field testing, and electroretinography. Because visual symptoms had persisted for more than 3 months and the head MRI scan showed no abnormalities, the patient was diagnosed with VSS. For the photophobia, yellow-brown lenses were prescribed, which blocked the short-wavelength region. The photophobia reduced, but her vision became dark. The patient did not like the color of the lenses and had difficulty with daily wear. TRIGUARD lens was subsequently prescribed which blocks three wavelengths of light(420 nm, 460 nm' and 585 nm). As a result, photophobia and contrast sensitivity improved and she was able to wear the glasses without any problems with the color of the lenses.

Results:Light-blocking glasses are useful for VSS patients with photophobia.

Conclusion:The TRIGUARD lens improved the patient's photophobia and did not darken the vision. The lenses with inconspicuous coloration are preferred for daily wear without concern of appearance.


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