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Title

EFFECT OF CATARACT TYPE AND SEVERITY ON VISUAL ACUITY AND CONTRAST SENSITIVIT

Pages

  26-31

Abstract

 Purpose: To determine the effect of cataract type and severity in eyes with pure types of age-related lens opacities on VISUAL ACUITY (VA) and CONTRAST SENSITIVITY in the presence and absence of glare conditions. Methods: Sixty patients with senile cataracts aged 40 years or older with no other ocular pathologies were evaluated for VA and CONTRAST SENSITIVITY with and without glare. Lens opacities were classified according to the Lens Opacities Classification System (LOCS) III. VA was measured using the Snellen chart. CONTRAST SENSITIVITY was measured with the Vector Vision CSV-1000E chart in the presence and absence of glare by calculating the area under log CONTRAST SENSITIVITY (log CS) function (AULCSF). Results: Cataracts were posterior subcapsular in 26 eyes, cortical in 19 eyes and nuclear in 15 eyes. VA significantly decreased with increasing cataract severity and there was significant loss of CONTRAST SENSITIVITY at all spatial frequencies with increasing cataract severity. AULCSF significantly decreased with increasing cataract severity in the presence and absence of glare conditions. CONTRAST SENSITIVITY was significantly reduced at high spatial frequency (18 cpd) in cortical cataracts in the presence of glare in day light and at low spatial frequency (3 cpd) in night light. Conclusion: Increased cataract severity is strongly associated with a decrease in both VA and AULCSF. CONTRAST SENSITIVITY scores may offer additional information over standard VA tests in patients with early AGE-RELATED CATARACTs.

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    APA: Copy

    HERAVIAN SHANDIZ, JAVAD, DERAKHSHAN, AKBAR, DANESHYAR, AMENEH, AZIMI, ABBAS, OSTADI MOGHADDAM, HADI, YEKTA, ABBAS ALI, HOSEINI YAZDI, SEYED HOSEIN, & ESMAILY, HABIBOLLAH. (2011). EFFECT OF CATARACT TYPE AND SEVERITY ON VISUAL ACUITY AND CONTRAST SENSITIVIT. JOURNAL OF OPHTHALMIC AND VISION RESEARCH, 6(1), 26-31. SID. https://sid.ir/paper/311438/en

    Vancouver: Copy

    HERAVIAN SHANDIZ JAVAD, DERAKHSHAN AKBAR, DANESHYAR AMENEH, AZIMI ABBAS, OSTADI MOGHADDAM HADI, YEKTA ABBAS ALI, HOSEINI YAZDI SEYED HOSEIN, ESMAILY HABIBOLLAH. EFFECT OF CATARACT TYPE AND SEVERITY ON VISUAL ACUITY AND CONTRAST SENSITIVIT. JOURNAL OF OPHTHALMIC AND VISION RESEARCH[Internet]. 2011;6(1):26-31. Available from: https://sid.ir/paper/311438/en

    IEEE: Copy

    JAVAD HERAVIAN SHANDIZ, AKBAR DERAKHSHAN, AMENEH DANESHYAR, ABBAS AZIMI, HADI OSTADI MOGHADDAM, ABBAS ALI YEKTA, SEYED HOSEIN HOSEINI YAZDI, and HABIBOLLAH ESMAILY, “EFFECT OF CATARACT TYPE AND SEVERITY ON VISUAL ACUITY AND CONTRAST SENSITIVIT,” JOURNAL OF OPHTHALMIC AND VISION RESEARCH, vol. 6, no. 1, pp. 26–31, 2011, [Online]. Available: https://sid.ir/paper/311438/en

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