22 August 2017 Usage of CISS and Conlon surveys in eye accommodation studies
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Proceedings Volume 10453, Third International Conference on Applications of Optics and Photonics; 104533A (2017) https://doi.org/10.1117/12.2276618
Event: Third International Conference on Applications of Optics and Photonics, 2017, Faro, Portugal
Abstract
To date, there is no assessment of more than one survey used for a clinical research study that address subjects with and without symptoms related to accommodative or binocular vision disorders. Thus, the purpose of this study was to investigate two different surveys – CISS and Conlon for the same subject group and analyse also critical visual function parameters. Monocular and binocular accommodative response for 20 subjects was measured for dominant eye with openfield infrared autorefractometer (Shin-Nippon SRW-5000) at three distances (24 cm, 30 cm and 40 cm). Subjects were divided into symptomatic and asymptomatic group using cut off score 21 for CISS and 20 for Conlon survey. We found positive exponential growth relationship between CISS and Conlon scores (R² = 0.7), but separation between symptomatic and asymptomatic group differed significantly depending on which survey was used. We found positive correlation between Conlon score and exophoria at 30 cm (r=0.41, p=0.01) and 24 cm (r=0.27, p=0.03). Relationship between subjective symptoms and following clinical parameters - accommodation lag (r < 0.2, p < 0.05), positive relative accommodation (r < 0.15, p < 0.05) and convergence near point (r = 0.26, p < 0.05) were not significant. Our results confirmed that using different subjective symptom surveys can provide different results within the same subject group, therefore we recommend to use surveys as a part of case history and tool to measure patient satisfaction and results of treatment effectiveness instead of using them for clinical trials as a criteria to divide symptomatic and asymptomatic group.
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Karola Panke, Karola Panke, Aiga Svede, Aiga Svede, Wolfgang Jaschinski, Wolfgang Jaschinski, Gunta Krumina, Gunta Krumina, } "Usage of CISS and Conlon surveys in eye accommodation studies", Proc. SPIE 10453, Third International Conference on Applications of Optics and Photonics, 104533A (22 August 2017); doi: 10.1117/12.2276618; https://doi.org/10.1117/12.2276618
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