In:
Journal of Refractive Surgery, SLACK, Inc., Vol. 26, No. 2 ( 2010-02), p. 127-133
Abstract:
To evaluate the agreement among three different optical methods in measuring anterior chamber depth (ACD), central corneal thickness (CCT), and pupil diameter. METHODS: One hundred eyes of 50 healthy patients (25 men, 25 women) were enrolled in the study. Mean patient age was 25 years (range: 21 to 32 years). Exclusion criteria were history of any intraocular or corneal surgery, contact lens wear, corneal anomalies, and spherical refraction 〉 5.00 diopters (D) or cylindrical refraction 〉 2.00 D. All measurements were done by the same operator under mesopic light conditions and repeated using three different optical methods: Visante optical coherence tomography (OCT) (Carl Zeiss Meditec), Orbscan (Bausch & Lomb), and Pentacam (Oculus Optikgeräte GmbH). RESULTS: Mean CCT as measured by Visante OCT, Orb-scan, and Pentacam was 529±30.5 µ m, 554±32.7 µ m, and 552±29.3 µ m, respectively. Mean ACD values were 2.94±0.34 mm, 2.84±0.33 mm, and 2.98±0.33 mm, respectively. Mean pupil diameter measurements were 4.87±1.09 mm, 4.0±0.67 mm, and 3.05±0.59 mm, respectively. The Visante OCT measured CCT thinner and Orbscan measured ACD shallower than the other two methods. All three methods measured pupil diameters significantly different. CONCLUSIONS: This study found some statistically significant but clinically insignificant differences among the optical methods assessed. The differences are small and do not influence decisions for refractive surgery in clinical practice. [ J Refract Surg. 2010;26:127–133.]
Type of Medium:
Online Resource
ISSN:
1081-597X
DOI:
10.3928/1081597X-20100121-08
Language:
English
Publisher:
SLACK, Inc.
Publication Date:
2010
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