Table 2.

Hematological and hemorheological parameters in SCC patients categorized according to retinopathy severity

	Group 1 (n=8)	Group 2 (n=8)	Group 3 (n=11)
Leukocytes (109/l)	6.58 ± 1.54	8.49 ± 2.44	7.96 ± 2.26
RBCs (1012/l)	4.20 ± 0.48	4.44 ± 0.81	4.08 ± 0.54
Hb (g/100 ml)	11.18 ± 1.07	11.38 ± 1.40	10.74 ± 0.91
MCV (fl)	73.78 ± 4.78	71.00 ± 8.36	72.88 ± 4.81
MCH (pg)	26.72 ± 1.98	26.08 ± 3.50	26.55 ± 2.12
Platelets count (109/l)	330.63 ± 141.93	210.50 ± 101.26	424.00 ± 159.95 †
Polynuclear Neutrophils (109/l)	3.11 ± 0.66	5.17 ± 2.00	4.33 ± 1.71
Eosinophils (109/l)	0.35 ± 0.35	0.17 ± 0.09	0.24 ± 0.13
Lymphocytes (109/l)	2.39 ± 0.61	2.25 ± 0.74	2.66 ± 0.86
Monocytes (109/l)	0.69 ± 0.37	0.86 ± 0.67	0.66 ± 0.28
Reticulocytes (%)	2.88 ± 1.03	2.18 ± 0.86	3.14 ± 1.57
Lactate dehydrogenase (UI/l)	269.38 ± 53.56	371.67 ± 155.22	300.00 ± 68.50
Hct (%)	33.05 ± 3.25	33.25 ± 4.50	30.65 ± 3.71
ηb at 90s−1(mPa/s	7.39 ± 1.50	9.08 ± 1.45	9.47 ± 1.80 *
EI at 0.95 Pa	0.06 ± 0.01	0.07 ± 0.03	0.08 ± 0.02
EI at 1.69 Pa	0.12 ± 0.01	0.12 ± 0.02	0.12 ± 0.02
EI at 3 Pa	0.19 ± 0.02	0.17 ± 0.02	0.17 ± 0.03
EI at 5.33 Pa	0.26 ± 0.03	0.24 ± 0.03	0.23 ± 0.05
EI at 9.49 Pa	0.34 ± 0.05	0.31 ± 0.04	0.30 ± 0.06
EI at 16.87 Pa	0.40 ± 0.06	0.37 ± 0.05	0.36 ± 0.07
EI at 30 Pa	0.45 ± 0.07	0.43 ± 0.05	0.40 ± 0.07
AI (%)	46.96 ± 9.17	47.38 ± 10.10	46.66 ± 6.50
γthr (s−1)	225.00 ± 66.82	297.14 ± 116.47	283.85 ± 98.86

Group 1: without sickle cell retinopathy, group 2: non-proliferative and proliferative stage I and II retinopathy, group 3: proliferative retinopathy of stage III, IV and V. Mean ± SD. RBCs = red blood cells, Hb = hemoglobin concentration, MCV = mean corpuscular volume, MCH = mean corpuscular hemoglobin, Hct = hematocrit, ηb = whole blood viscosity, EI = Elongation Index (i.e. RBC deformability), AI = RBC aggregation index, γthr = RBC disaggregation threshold.

^*Different from group 1 (p < 0.05),

^†different from group 2 (p < 0.05).