Amplitude of accommodation in one population of Santa Fe de Bogotá D.C.

Abstract

In Colombia are few studies on normal values amplitude of accommodation. This work has as its main objective to determine the average extent of accommodation by age groups in the population between 5 to 39 years old in the city of Santa Fe Bogota-based data taken in 1991. Methodology: a review of the data reported in a paper grade on 620 subjects (1240 eyes) to which they assessed the extent of accommodation taken into men and women of the city of Bogota in 1991 with refractive error between -1.50 And +1.50 D cylindrical power to -1.00 from -0.25 D, visual acuity in distant vision greater than or equal to 20/30, near visual acuity of greater than or equal to 0.75 M. We performed determining the criteria for inclusion and exclusion from the database, took the values of the breadth of accommodation determining the average extent of accommodation for the different age groups selected, the results were compared with the values found by Duane, and Kragh Hofstteter and finally an analysis of changes in the breadth of accommodation with the passage of age. <em><strong>Results:</strong></em> the average extent of accommodation of all subjects was 9.10 D for the right eye and 9.09 D for the left eye and we found no statistically significant differences between both eyes. The extent of accommodation decreases by 0.50 D of 5 to 14 years of age and 1.0 to 1.3 D to 39 years old. Conclusions: the results of breadth of accommodation observed show that Hofstteter found values superior to those of Duane, Kragh and this study (4.2 higher in D between 5 to 9 years) especially in the younger ages. Regarding Duane was a difference of 1.7 D between 5 and 30 years and 1.35 D after 30 years. The minor difference is hallo regarding Kragh found slightly higher values between 0.50 and 1.2 D D.