A comparative study of the gradient accommodative convergence/accommodation ratios obtained through +1.00ds and -1.00ds in primary school children
AbstractThe gradient accommodative convergence/accommodation ratios (AC/A ratios) of fifty healthy primary school children between the ages of 6-12 years determined through a+1.00 DS lens and through a -1.00DS lens were compared. This was done by measuring the induced phoria at near using the Von Graeffe technique and subsequently through a +1.00DS lens and a -100DS lens; the change in phoria brought about by the change in stimulus to accommodation gave the value of the gradientAC/Aratio. The mean AC/Aratio through +1.00DS was 3.4±1.4 and through -1.00DS was 4.2±2.0. The difference in the two A/C ratios was found to be significant (P<0.05). It is recommended that borderline patients should have their gradientAC/Aratiochecked through both lenses for more precise diagnosis and management
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. http://creativecommons.org/licenses/by-nc-sa/4.0/
The author(s) retain their copyright, which means that authors may use the article for teaching and other non-commercial research purposes without approval from the publisher, provided the journal is acknowledged as the original source.
Disclaimer: Concerted efforts are always made by the Publisher and the Editorial Board to see that no inaccurate or misleading information, opinion or assertion appears in this journal. However, information and opinions appearing in the articles of this journal are the sole responsibility of the author(s) concerned. The Publisher, Editorial Board, their agents or employees, accept no responsibility or liability whatsoever for the consequences of any inaccurate information.