June 2015
Volume 56, Issue 7
Free
ARVO Annual Meeting Abstract  |   June 2015
Effect of forward light scattering on visual function in eyes with cortical cataract
Author Affiliations & Notes
  • Hiroshi Sasaki
    Department of Ophthalmology, Kanazawa Medical University, Kahoku, Japan
    Division of Vision Research for Environmental Health, Kanazawa Medical University, Kahoku, Japan
  • Eri Shibuya
    Department of Ophthalmology, Kanazawa Medical University, Kahoku, Japan
    Medical Technology Division, Kanazawa Medical University, Kahoku, Japan
  • Mai Takahashi
    Department of Ophthalmology, Kanazawa Medical University, Kahoku, Japan
    Medical Technology Division, Kanazawa Medical University, Kahoku, Japan
  • Ayako Okamoto
    Department of Ophthalmology, Kanazawa Medical University, Kahoku, Japan
    Medical Technology Division, Kanazawa Medical University, Kahoku, Japan
  • Norihiro Mita
    Department of Ophthalmology, Kanazawa Medical University, Kahoku, Japan
    Medical Technology Division, Kanazawa Medical University, Kahoku, Japan
  • Natsuko Hatsusaka
    Department of Ophthalmology, Kanazawa Medical University, Kahoku, Japan
  • Shinsuke Shibata
    Department of Ophthalmology, Kanazawa Medical University, Kahoku, Japan
  • Teppei Shibata
    Department of Ophthalmology, Kanazawa Medical University, Kahoku, Japan
  • Kazuyuki Sasaki
    Department of Ophthalmology, Kanazawa Medical University, Kahoku, Japan
    Division of Vision Research for Environmental Health, Kanazawa Medical University, Kahoku, Japan
  • Eri Kubo
    Department of Ophthalmology, Kanazawa Medical University, Kahoku, Japan
  • Footnotes
    Commercial Relationships Hiroshi Sasaki, None; Eri Shibuya, None; Mai Takahashi, None; Ayako Okamoto, None; Norihiro Mita, None; Natsuko Hatsusaka, None; Shinsuke Shibata, None; Teppei Shibata, None; Kazuyuki Sasaki, None; Eri Kubo, None
  • Footnotes
    Support None
Investigative Ophthalmology & Visual Science June 2015, Vol.56, 1070. doi:
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    • Get Citation

      Hiroshi Sasaki, Eri Shibuya, Mai Takahashi, Ayako Okamoto, Norihiro Mita, Natsuko Hatsusaka, Shinsuke Shibata, Teppei Shibata, Kazuyuki Sasaki, Eri Kubo; Effect of forward light scattering on visual function in eyes with cortical cataract. Invest. Ophthalmol. Vis. Sci. 2015;56(7 ):1070.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose: We examined correlations between forward light scattering (FLS) and visual function in cortical cataract (COR) and transparent (TP) eyes.

Methods: Of subjects in 2013 Monzen Eye Study and Kanazawa Medical University Hospital cataract surgery patients from July 2013 to March 2014, 39 COR eyes of 35 subjects (66.5±6.0 yrs) were compared with 42 TP eyes of 42 subjects (57.2±8.7 yrs) as control. Cases with ocular disease except for refractive error were excluded. COR was examined under maximal mydriasis by the same examiner, graded in 4 stages (Grade 0 to 3) according to WHO classification system, and categorized CEN+/- by opacity within/outside the central 3 mm diameter of the pupil. Opacity within this 3 mm diameter area was measured with transillumination imaging by anterior eye segment analysis system EAS-1000 (NIDEK). FLS was measured by C-Quant (OCULUS®) and stray light correction level (Log(s)) was calculated. Total higher-order aberration (HOA) in the 4 mm pupil diameter, retinal image contrast (RIC) in the 3 mm entrance pupil, and 25% day and evening vision contrast visual acuity (CVA) were measured by KR-9000PW (TOPCON), PSF-1000 (TOPCON), and CAT-2000 (NEITZ), respectively.

Results: FLS was higher in COR (1.38±0.25) than in TP (1.13±0.22) (p<0.001). There was no significant correlation between FLS and age in COR or TP. FLS in COR increased with grade. CEN+ (1.45±0.20) had higher FLS than CEN- (1.26±0.30) (p<0.05) with CEN+ grade 1 (1.36±0.25), 2 (1.43±0.13), and 3 (1.51±0.24). There was a positive correlation between area of opacity of CEN+ and FLS (p<0.05). CEN- with COR grade 2 (1.37±0.32) had higher FLS than TP (p<0.05). In TP eyes, FLS was significantly correlated with decreased best corrected visual acuity (p<0.01), increased total ocular HOA (p<0.01) and total intraocular HOA (p<0.05), but not in COR eyes. There was no correlation between FLS and CVA in TP or COR, however, RIC in COR showed a negative correlation with FLS in low and intermediate frequency domains (p<0.05).

Conclusions: FLS in TP at age 40s-60s was little affected by aging. In COR, FLS increased with severity of opacity and opacity in the pupillary area, decreasing RIC. It was suggested that higher FLS is a major factor in decreased visual function.

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