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Measurement of contrast sensitivity using the M&S smart system II compared with the standard Pelli–Robson chart in patients with primary pterygium

Hilmi, Mohd Radzi and Khairidzan, Mohd Kamal and Che Azemin, Zulfaezal and Azami, Muhammad Hanafi and Ariffin, Azrin Esmady and UNSPECIFIED (2018) Measurement of contrast sensitivity using the M&S smart system II compared with the standard Pelli–Robson chart in patients with primary pterygium. Makara Journal of Health Research, 22 (3). pp. 167-171. ISSN 2356-3664 E-ISSN 2356-3656

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Abstract

Background: Contrast sensitivity (CS) is widely used as a measure of visual function in research and clinical settings. CS is regarded as an important visual parameter, detecting subtle reductions in vision prior to significant reduction in visual acuity. Methods: We examined the agreement between the gold-standard Pelli–Robson chart and a computerized test termed the M&S Smart System II (MSSS-II) in patients with primary pterygium. Ninety-three patients (93 primary pterygium eyes) who visited an ophthalmology clinic were selected. The patients were randomly assessed for CS using the MSSS-II or Pelli–Robson chart. The primary outcome was agreement in log units between these two tests in the assessment of CS in patients with primary pterygium. Results: The mean and standard deviation of CS measurement in the two tests were comparable (1.22 ± 0.56 vs. 1.21 ± 0.57 log units, respectively, p = 0.083). The Bland–Altman plot revealed that the mean difference between the two charts was 0.0016 log units (standard deviation: 0.009 log units) with narrow limits of agreement of −0.0186 to 0.0186. Conclusions: MSSS-II provides an alternative for the clinical assessment of CS using a computerized method that describes the status of visual function in patients with primary pterygium.

Item Type: Article (Journal)
Additional Information: 7746/69182
Uncontrolled Keywords: contrast sensitivity, Pelli–Robson chart, M&S Smart System II, pterygium
Subjects: R Medicine > RE Ophthalmology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Allied Health Sciences
Kulliyyah of Allied Health Sciences > Department of Optometry and Visual Science
Kulliyyah of Medicine
Kulliyyah of Medicine > Department of Ophthalmology
Depositing User: Dr Mohd Radzi Hilmi
Date Deposited: 15 Jan 2019 14:43
Last Modified: 29 Jan 2019 16:25
URI: http://irep.iium.edu.my/id/eprint/69182

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