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Ultra-long OCT suitable for biometry, study finds
Ultra-long optical coherence tomography is an effective alternative in whole eye biometry during accommodation, according to a new American Journal of Ophthalmology study.
Zhong and colleagues utilized ultra-long optical coherence tomography (UL-OCT) on 21 participants, measuring central corneal thickness, anterior chamber depth (ACD), lens thickness, vitreous length and axial length, as detailed in the study.
Results showed that axial biometry of the entire eye changed significantly: ACD decreased from 3.128 ± 0.305 mm to 2.961 ± 0.298 mm; lens thickness increased from 3.723 ± 0.237 mm to 3.963 ± 0.234 mm; vitreous length decreased from 17.129 ± 0.864 mm to 17.057± 0.848 mm; axial length increased from 24.519 ± 0.917 mm to 24.545±0.915 mm.
"During accommodation, whole eye axial biometry changed, including a decrease in ACD and vitreous length, and an increase in lens thickness and axial length," the authors concluded. "UL-OCT provides an alternative method that is suitable for full eye biometry during accommodation."
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Am J Ophthalmol. 2014; doi: 10.1016/j.ajo.2014.01.016.