ABSTRACT
This study investigated the effects of blue, green, and red filter lenses on the amplitude of
accommodation in emmetropic young adults who were selected by convenient sampling method
among students of the University of Benin. A total of 50 subjects (25 males, 25 females) aged xi
18-30 years were selected and used for this research. The subjects were without any significant
refractive error and were free of any obvious ocular pathology. Their baseline amplitude of
accommodation was measured without filter lenses, thereafter their amplitude of accommodation
was measured with the blue, green and red filter lens. Results obtained showed significant
differences in the amplitude of accommodation without filters and with each of the colored
filters. The AoA with the red filter lens decreased from 11.02±1.40 dioptres to 8.84±0.99
dioptres which was statistically significant (p<0.05). The AoA increased from 11.02±1.40
dioptres to 12.11± 1.30 dioptres with the blue filter lens which was statistically significant
(p<0.05). The AoA decreased from 11.02 ±1.40 dioptres to 10.59±1.25 dioptres with the green
filter lens which was statistically significant (p<0.05). These findings demonstrate that colored
filter lenses can modulate accommodative performance in emmetropic young adults. It can be
employed in clinical practice, workplace design, and optical device development. The study's
outcomes suggest potential benefits for individuals with accommodative insufficiency, visual
fatigue, and other visual conditions
