Distance vergence adaptation is abnormal in subjects with convergence insufficiency.


It is well known that in convergence insufficiency (CI) prism adaptation is reduced in response to base-out (BO) prisms at near. There have also been some suggestions in the literature that adaptation is reduced at other distances as well. The present data show that in CI adaptation is not only reduced in response to BO at near, but also in response to base-in (BI) at near and for both BI and BO at distance. This raises the interesting question whether distance adaptation becomes reduced because of reduced near adaptation or whether these subjects have a generally reduced horizontal adaptation mechanism.


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@article{Brautaset2005DistanceVA, title={Distance vergence adaptation is abnormal in subjects with convergence insufficiency.}, author={Rune L Brautaset and Jennifer A Jennings}, journal={Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians}, year={2005}, volume={25 3}, pages={211-4} }