Ultrasonography and optical low-coherence interferometry compared in the chicken eye

Optometry and Vision Science : Official Publication of the American Academy of Optometry
Alexandra Marcha PenhaMarita P Feldkaemper

Abstract

To compare ocular biometry [anterior chamber depth (ACD), lens thickness (LT), vitreous chamber depth (VCD), and axial length (AL)] using A-scan ultrasonography and optical low-coherence interferometry (OLCI) in the chicken eye. Two-week-old chicks (n = 42) were measured. Bland-Altman plots and repeatability and correlation analyses were calculated for both methods. There was a high correlation between both methods for ACD (r = 0.6144, p < 0.0001), VCD (r = 0.9595, p < 0.0001), and AL (r = 0.9290, p < 0.0001) but not for LT (r = 0.1604, p = 0.144). Measurements by OLCI were more consistent (smaller coefficients of variation and higher intraclass correlation). Bland-Altman plots showed that ultrasound provided larger values for LT, VCD, and AL but not for ACD [differences between ultrasound and OLCI (mean ± SD): ACD = -0.11 ± 0.12 mm; LT = 0.10 ± 0.09 mm; VCD = 0.25 ± 0.08 mm; AL = 0.50 ± 0.16 mm]. A high correlation between both techniques was found for three of the four parameters (ACD, VCD, and AL). However, as the absolute values were different, both techniques cannot replace each other mainly because (1) one is non-contact and the other contact and can induce a minor indentation of the cornea and (2) each device uses differ...Continue Reading

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Feb 3, 2009·Journal of Cataract and Refractive Surgery·Francisco LaraRobert Montés-Micó
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May 10, 2011·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Huseyin GursoyErtugrul Colak

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Citations

Apr 12, 2018·Current Eye Research·Ashutosh JnawaliLisa A Ostrin
Sep 5, 2018·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Timothy J GawneThomas T Norton
Mar 13, 2021·Experimental Eye Research·Thomas T NortonTimothy J Gawne
Apr 18, 2021·Experimental Eye Research·Qiong WangRuihua Wei
Aug 13, 2021·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Safal KhanalTimothy J Gawne

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