Fifteen subjects forming three groups of refractive astigmats (astigmation < 1.00 D., astigmatism ≥ 1.00 D and < 2.00 D, and astigmatism ≥ 2.00 D) were fitted with spherical DuraSoft lenses. Rotation was assessed from slit-lamp photographs taken after 30 min and after 4 hr of lens wear. The results show that incorporating either a prism or a single truncation alone into a spherical DuraSoft lens suffices as a method of stabilization, stabilization being effectively achieved with this lens in subjects with refractive astigmatism less than 2.00 D.
Received April 19, 1978.
*Optometrist, Ph.D., Director of Clinical Research, F.A.A.O.
†Optometrist, Member of Faculty, Illinois College of Optometry, F.A.A.O.
‡ Ph.D., Vice-President, Clinical and Educational Service.
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© 1978 American Academy of Optometry