Psychotic Symptoms in Cataract Patients Without Overt Psychosis Are Ameliorated Following Successful Cataract Surgery

TL;DR

Cataract surgery can reduce psychotic symptoms in patients without overt psychosis, especially when vision improves significantly.

Contribution

This study demonstrates that cataract surgery ameliorates psychotic symptoms linked to vision loss.

Findings

Cataract surgery significantly reduces paranoid ideation and psychoticism symptoms.

Improvement in visual acuity correlates with greater reduction in psychotic symptoms.

The effect is independent of age, gender, and recent stressful life events.

Abstract

Background: Cataract is the leading cause of severe, non-traumatic vision loss worldwide, leading to multiple adverse outcomes in mental health, including depression, anxiety, and cognitive decline; however, the relationship to psychotic symptoms remains unclear. While congenital vision loss appears protective against psychosis, acquired vision loss or acute deprivation are inducing psychotic symptoms. Methods: This study of 200 consecutive cataract patients, with severe vision loss, compares Paranoid Ideation and Psychoticism symptoms pre surgery, measured with the SCL-90-R scale, to those symptoms that persisted two months post-surgery. Results: The results confirm the hypothesis that cataract surgery is associated with a reduction in those symptoms (Wilcoxon Z = 5.425, p < 0.001 for Paranoid Ideation and Wilcoxon Z = 6.478, p < 0.001 for Psychoticism). Higher improvement in those variables was associated with higher improvement in visual acuity while controlling for age, gender and stressful life events during the past six months. Conclusions: Those results point to the importance of addressing loss of visual function especially in patients with pre-existing psychotic symptoms or signs of cognitive decline.