Colour discrimination among patients with schizophrenia in Lebanon

Background: Abnormalities and contrast sensitivity have already been studied in schizophrenia. However, the relationship between symptom severity in schizophrenia and colour vision sensitivity has not been studied systematically. Aim: Our objective was to evaluate colour discrimination in patients w...

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Bibliographic Details
Published in:International journal of psychiatry in clinical practice 2020-06, Vol.24 (2), p.193-200
Main Authors: Dahdouh, Oussama, Haddad, Chadia, Hany, Zeina, Azar, Georges, Lahoud, Corinne, Hallit, Souheil, Hachem, Dory
Format: Article
Language:English
Subjects:
Adult
Case-Control Studies
Color Perception - physiology
Color Vision Defects - physiopathology
Colour discrimination
Discrimination, Psychological - physiology
Female
Humans
Lebanon
Male
Middle Aged
PANSS
schizophrenia
Schizophrenia - complications
Schizophrenia - physiopathology
Severity of Illness Index
total error score
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Summary:Background: Abnormalities and contrast sensitivity have already been studied in schizophrenia. However, the relationship between symptom severity in schizophrenia and colour vision sensitivity has not been studied systematically. Aim: Our objective was to evaluate colour discrimination in patients with schizophrenia compared to controls and examine if this colour discrimination is correlated with schizophrenia symptoms' severity. Methods: This case-control study, performed between January and April 2017, included 50 schizophrenic patients and 50 healthy controls matched for age and sex. The Positive and Negative Symptoms Scale (PANSS) was used to determine the schizophrenia symptoms' severity. Colour discrimination was evaluated using the total error score (TES) generated using the Farnsworth D-15 test. The higher the TES, the more severe colourblindness. Results: A significantly higher mean TES was found in schizophrenics (30.32) compared to healthy patients (13.07) (p 
ISSN:1365-1501
1471-1788
DOI:10.1080/13651501.2019.1711421