Comparison of dynamic digital pupillometry and static measurements of pupil size in determining scotopic pupil size before refractive surgery
To compare 2 digital infrared pupillometers. Anterior Segment Service, Moorfields Eye Hospital, London, England. Eighty-eight eyes of 44 healthy subjects were recruited into the study. The scotopic pupil size was measured with 2 instruments, a digital pupillometer (Procyon) and a Hartman-Shack wavef...
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Published in | Journal of cataract and refractive surgery Vol. 31; no. 6; pp. 1171 - 1176 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
New York, NY
Elsevier Inc
01.06.2005
Elsevier Science |
Subjects | |
Online Access | Get full text |
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Summary: | To compare 2 digital infrared pupillometers.
Anterior Segment Service, Moorfields Eye Hospital, London, England.
Eighty-eight eyes of 44 healthy subjects were recruited into the study. The scotopic pupil size was measured with 2 instruments, a digital pupillometer (Procyon) and a Hartman-Shack wavefront aberrometer (Visx WaveScan). Agreement between the instruments was assessed.
There were 21 men and 23 women with a mean age 38.1 years ± 9.2 (SD) (range 23 to 62 years). The mean scotopic pupil diameter was significantly larger with the WaveScan (6.61 ± 0.92 mm) than with the Procyon pupillometer (6.40 ± 0.90 mm),
P<.001.
There was good agreement in measurement of scotopic pupil size between the two instruments. The larger pupil diameter found with the Visx WaveScan than with the Procyon digital pupillometer probably represents the different illumination level used by each instrument, the effects of accommodation, and target fogging. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0886-3350 1873-4502 |
DOI: | 10.1016/j.jcrs.2004.10.049 |