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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Bibliographic Details
Published inJournal of cataract and refractive surgery Vol. 31; no. 6; pp. 1171 - 1176
Main Authors Wickremasinghe, Sanj S., Smith, Guy T., Stevens, Julian D.
Format Journal Article
LanguageEnglish
Published New York, NY Elsevier Inc 01.06.2005
Elsevier Science
Subjects
Adult
Biological and medical sciences
Biometry - methods
Diagnostic Techniques, Ophthalmological - instrumentation
Female
Humans
Infrared Rays
Iris - anatomy & histology
Male
Medical sciences
Middle Aged
Night Vision - physiology
Preoperative Care
Pupil - physiology
Refractive Surgical Procedures
Reproducibility of Results
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
Surgery of the eye and orbit
Young Adult
Measurement
Pupil
Statics
Keratomileusis
Treatment
Dynamics
Surgery
Size
Pupillometry
Ophthalmology
Comparative study
Photorefractive keratectomy
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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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ISSN:0886-3350
1873-4502
DOI:10.1016/j.jcrs.2004.10.049