Purpose: To evaluate the effectiveness of prisms in treating binocular diplopia in patients with retinal pathologies and to evaluate factors associated with treatment success. Methods: A retrospective chart review was conducted on patients ≥ 18 years with binocular diplopia and retinal pathology presenting between 2012– 2022. Patients prescribed prisms with ≥ 1 follow-up were included. Subjective prism prescriptions were compared to measured deviations. Associations between treatment success and clinical factors were analyzed. Results: Seventy patients (mean age 73.5 ± 8.6 years) were included, most with epiretinal membranes (54.3%) or prior retinal detachment (14.3%). Diplopia was eliminated in 65.7% of patients with prisms, though 43.5% of these patients required at least 1 prism change. For horizontal deviations, prescribed prisms were lower than measured deviations at both distance (Mean = 3.39 ± 4.23 PD vs. 5.33 ± 6.03 PD, p 0.05). Conclusion: Prisms effectively eliminated diplopia in most patients, though adjustments were frequently necessary. Discrepancies between measured and subjectively preferred prism magnitudes highlight the importance of careful, individualized prism trials. Keywords: prisms, binocular diplopia, diplopia, retinal pathology
Tadross et al. (Mon,) studied this question.