prism diopter


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Related to prism diopter: prism dioptre

prism di·op·ter (p.d.),

the unit of measurement of the deviation of light in passing through a prism, being a deflection of 1 cm at a distance of 1 m.
References in periodicals archive ?
After treatment at 1 week, mean deviation was 2.58 prism Diopters i.e., 27.52 prism diopters reduction was observed at 1 week after injection.
Of 8 patients presenting within 1-2 month of duration, mean deviation before treatment was 35.13 prism diopters. After treatment at 1 week, mean deviation was 14.63 prism diopters i.e., 20.50 prism diopters reduction was observed at 1 week after injection.
Of 7 patients presenting within 2-3 months of duration, mean deviation before treatment was 43.58 prism diopters. After treatment at 1 week, mean deviation was 12.58 prism diopters i.e., 31 prism diopters reduction was observed at 1 week after injection.
Table 9: Comparison of effect of Botulinum toxin in patents with different Aetiology Aetiology Pre-Treatment Deviation Post-Treatment Deviation in Prism Diopters (1week) in Prism Diopters DM 34.86[+ or -]11.70 5.47[+ or -]12.78 Trauma 41.25[+ or -]13.15 13.50[+ or -]24.41 Idiopathic 31.45[+ or -]12.31 6.73[+ or -]15.37 CSOM 31.50[+ or -]19.09 3[+ or -]4.24 DM&HTN 30.25[+ or -]14.29 13.25[+ or -]21.50 Pre-Treatment Deviation Post-Treatment Deviation in Prism Diopters (1week) in Prism Diopters 1 2 34.86 5.47 3 4 41.25 13.5 5 6 31.45 6.73 7 8 31.5 3 9 10 30.25 13.25 11 Note: Table made from bar graph.
In them mean deviation before treatment was 34.86 prism diopters. At 1 week after treatment, mean deviation was 5.47 prism diopters i.e., 29.39 prism dioptres reduction was observed at 1 week after injection.
Individual surgical dosage for eso- and exodeviations Deviation Esotropia Number Exotropia Number (PD) (MR Rc/LR of (LR Rc/MR of Rs) (mm) patients Rs) (mm) patients 20 PD -- -- 5/4 1 25 PD 4/5.5 1 -- -- 35 PD -- -- 7/6 1 40 PD 5.5/7 1 7/6.5 4 45 PD -- -- 8/6.5 1 50 PD 6/7.5 1 9/7 2 55 PD 6.5/7.5 1 9.5/7.5 1 60 PD 7.5/8 2 10/8 3 70 PD 8/8 1 11/9 1 80 PD -- -- 12/10 3 MR: Medial rectus, LR: Lateral rectus, Rc: Recession, Rs: Resection, PD: Prism diopters Table 3.
Infantile esotropia patients with less than 60 prism diopters (PD) deviation who underwent symmetric and asymmetric surgery and were followed for at least six months postoperatively were included in the study.