Rao A, Pal A, Mohapatra S. Spaeth/Richman Contrast Sensitivity in Staging Glaucoma.
Transl Vis Sci Technol 2021;
9:39. [PMID:
33384893 PMCID:
PMC7757629 DOI:
10.1167/tvst.9.13.39]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Accepted: 11/18/2020] [Indexed: 11/24/2022] Open
Abstract
Purpose
To investigate contrast sensitivity measures in glaucoma eyes with moderate to severe glaucoma.
Methods
The study included 50 eyes of 47 pseudophakic patients with moderate or severe glaucoma who were seen at a tertiary center from 2017 to 2020. Assessment of contrast sensitivity using the Spaeth/Richman contrast sensitivity (SPARCS) test and the Pelli-Robson (PR) chart was compared in eyes with mean deviation (MD) < -12 decibels (dB) and > -20 dB (group 1), MD < -20 dB and > -30 dB (group 2), or MD < -30 dB (group 3). Multivariate regression analysis was used to analyze the association of visual field MD with SPARCS/PR scores and various clinical variables, including age, diagnosis, and logMar visual acuity.
Results
SPARCS total scores and quadrant-wise scores were significantly different in all of the quadrants, whereas central scores and PR contrast sensitivity were similar across groups. The total SPARCS scores predicted the change in MD (β = 0.5, P < 0.001, R 2 = 61.8%) with minimal association of other quadrantic or PR scores. Total SPARCS scores of <45 and <38 predicted severe glaucoma with MD crossing -20 dB (sensitivity, 70.5%; specificity, 80.9%) and -30 dB (sensitivity, 79.3%; specificity, 77.7%), respectively. The logMar visual acuity did not correlate with any contrast sensitivity measure or clinical variables in this study.
Conclusions
The total SPARCS score may be used in staging glaucoma severity and to assess visual function in eyes with severe glaucoma.
Translational Relevance
The SPARCS test is a useful tool for assessing visual function in advanced glaucoma beyond MD worse than -20 dB or -30 dB.
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