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Revista Cubana de Oftalmología
versión On-line ISSN 1561-3070
Resumen
RODRIGUEZ MERCADO, Alejandro et al. Contrast sensitivity in a group of Mexican diabetics. Rev Cubana Oftalmol [online]. 2020, vol.33, n.3 Epub 02-Nov-2020. ISSN 1561-3070.
Objective:
Compare contrast sensitivity as measured in a group of Mexican diabetes mellitus patients versus a control non-diabetic group.
Methods:
A group of 31 volunteers, 14 participants with DM with a diagnosis time between 2 and 20 years (without diabetic retinopathy), and 17 in the control group started the study; 4 diabetics and 5 non-diabetics were excluded because they did not meet the inclusion criteria. Therefore, the data analyzed were from a group of 10 diabetics (52 ± 10 years) and another of 12 non-diabetics (52 ± 6 years). Contrast sensitivity was evaluated with a Vector Vision CSV1000E chart at a distance of 2.5 meters and a luminance of 85 cd/m2.
Results:
A higher percentage of diabetic eyes reached a better contrast threshold at 3, 6 and 18 cycles per degree in comparison with the control group. At 12 cycles per degree only at thresholds 1 and 5.
Conclusions:
Contrast sensitivity in the Mexican population with diabetes mellitus displays better contrast perception at the frequencies evaluated than the control group.
Palabras clave : Contrast sensitivity; diabetes mellitus; contrast threshold; cd/m2.