Table 1.

Participant characteristics

Characteristics	Results
Participants, n	72
Race	African-American
Eyes included for analysis	72 (one eye per each participant)
Median age and range (years)	32.5; range 19–70
Female, n (%)	46 (63.9)
Right eye included, n (%)	42 (58)
Controls, n	20
Patients with sickle cell disease, n	52
Stratified by proliferative disease, n (%)
Non-proliferative (stage 2 or below)	33 (63.5)
Proliferative (stage 3 or above)	19 (36.5)
Stratified by sickle genotype, n (%)
Haemoglobin SS	35 (67.3)
Haemoglobin SC	10 (19.2)
Beta-thalassemia	7 (13.5)