Treating diabetic retinopathy Treating diabetic retinopathy is a critical aspect of preserving vision and maintaining the overall quality of life […]
Purpose: Amplitude of accommodation varies with race and ethnicity and Hofstetter’s
equations are commonly used in Nigeria to calculate expected amplitude of accommodation for clinical purposes. The aim of this study was to present normative values for amplitude of accommodation for Nigerian children and to compare the measured values with
those calculated using Hofstetter’s equations.
Methods: A total of 688 children aged six to 16 years from three selected cities in Nigeria
were included in the study. Push-up technique was employed to measure the amplitude of
accommodation. The measured values were compared with the calculated values
(Hofstetter’s equations) using the paired t-test and Bland and Altman plots.
Results: The measured amplitude of accommodation for the subjects ranged from 8.00 to
25.00 D with a mean of 15.88 3.46 D. The calculated minimum amplitude of accommodation ranged from 11.00 to 13.50 D with a mean of 12.09 0.55 D and the calculated
average amplitude of accommodation ranged from 13.17 to 16.50 D with a mean of
14.62 0.73 D. The calculated maximum amplitude of accommodation ranged from
18.60 to 22.60 D with a mean of 20.34 0.88 D. The t-test indicated a significant difference between the measured and calculated minimum, average and maximum amplitudes
of accommodation (p < 0.0001). Also, the Bland–Altman plot suggested that there was a
lack of agreement between the measured and calculated amplitudes of accommodation.
Conclusion: The mean values of amplitude of accommodation in this study are different
from those reported in the literature. Also, the measured values differed from the calculated values using Hofstetter’s equation. This suggests that the use of Hosftetter’s equations to predict amplitude of accommodation may not be accurate for Nigerian children.
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Family Vision Clinic changed our lives! My daughter was frequently car sick, and she was getting headaches every day, often painful enough that they brought her to tears. We saw a string of doctors and therapists, but we made no progress. Finally, we found Dr. Levi Zurcher and his eye therapist Rain. After ten weeks of eye therapy my daughter no longer gets headaches, and she no longer gets car sick. Daily tears are a thing of the past. I really can’t say enough about this clinic. It was fascinating to watch Dr. Zurcher work. For the first time, someone who knew what they were doing was intently studying my daughter, really trying to figure out all of her eye issues, and his therapist Rain is one of the most patient and lovely people that I’ve ever had the good fortune to meet. We’re finished with eye therapy—yay!—and I have switched to American Family Vision Clinic for all of my family’s other eye health needs.
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Treating diabetic retinopathy Treating diabetic retinopathy is a critical aspect of preserving vision and maintaining the overall quality of life […]
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