Direct Measurement of the Ciliary Sulcus Diameter by 35-Megahertz Ultrasound Biomicroscopy

Jae Ryung Oh, Hyung Ho Shin, Jun Heon Kim, Hyo Myung Kim, Jong-Suk Song

Research output: Contribution to journalArticle

53 Citations (Scopus)

Abstract

Purpose: To measure the ciliary sulcus diameters in 4 different axes and to determine the correlation with white-to-white distance. Design: Cross-sectional observational study. Participants: Fourteen normal volunteers with no evidence of ocular disease. Methods: Twenty-eight eyes were scanned using a 35-megahertz (MHz) ultrasound biomicroscopy (UBM) in sequential meridional scan planes at 45° increments. Horizontal white-to-white distance was measured using Orbscan IIz (Bausch & Lomb-Orbtek, Inc., Salt Lake City, UT). Main Outcome Measures: Ciliary sulcus diameter, anterior chamber diameter, white-to-white distance, and coefficient of variation. Results: The coefficient of variation for 35-MHz UBM was 0.90%. The mean diameters±standard deviations of ciliary sulci were 11.55±0.38 mm at 45°, 11.99±0.36 mm at 90°, 11.54±0.36 mm at 135°, and 11.32±0.40 mm at 180°. In all eyes, vertical diameters were greater than horizontal diameters. The mean difference between vertical and horizontal diameters was 0.67±0.26 mm (range, 0.36-1.13 mm), and this was statistically significant (P<0.001). Horizontal sulcus diameters and horizontal white-to-white distances were not correlated (r = 0.006; P = 0.976). Conclusions: The posterior chamber appears to have a vertically oval shape. The white-to-white technique is inaccurate at predicting the horizontal diameter of the ciliary sulcus. The 35-MHz UBM may provide a good means of measuring the ciliary sulcus diameter for the implantation of a posterior chamber phakic intraocular lens.

Original languageEnglish
Pages (from-to)1685-1688
Number of pages4
JournalOphthalmology
Volume114
Issue number9
DOIs
Publication statusPublished - 2007 Sep 1

Fingerprint

Acoustic Microscopy
Phakic Intraocular Lenses
Eye Diseases
Anterior Chamber
Observational Studies
Healthy Volunteers
Cross-Sectional Studies
Outcome Assessment (Health Care)

ASJC Scopus subject areas

  • Ophthalmology

Cite this

Direct Measurement of the Ciliary Sulcus Diameter by 35-Megahertz Ultrasound Biomicroscopy. / Oh, Jae Ryung; Shin, Hyung Ho; Kim, Jun Heon; Kim, Hyo Myung; Song, Jong-Suk.

In: Ophthalmology, Vol. 114, No. 9, 01.09.2007, p. 1685-1688.

Research output: Contribution to journalArticle

@article{4a19d19b14ce419892c1b2ae5179e54a,
title = "Direct Measurement of the Ciliary Sulcus Diameter by 35-Megahertz Ultrasound Biomicroscopy",
abstract = "Purpose: To measure the ciliary sulcus diameters in 4 different axes and to determine the correlation with white-to-white distance. Design: Cross-sectional observational study. Participants: Fourteen normal volunteers with no evidence of ocular disease. Methods: Twenty-eight eyes were scanned using a 35-megahertz (MHz) ultrasound biomicroscopy (UBM) in sequential meridional scan planes at 45° increments. Horizontal white-to-white distance was measured using Orbscan IIz (Bausch & Lomb-Orbtek, Inc., Salt Lake City, UT). Main Outcome Measures: Ciliary sulcus diameter, anterior chamber diameter, white-to-white distance, and coefficient of variation. Results: The coefficient of variation for 35-MHz UBM was 0.90{\%}. The mean diameters±standard deviations of ciliary sulci were 11.55±0.38 mm at 45°, 11.99±0.36 mm at 90°, 11.54±0.36 mm at 135°, and 11.32±0.40 mm at 180°. In all eyes, vertical diameters were greater than horizontal diameters. The mean difference between vertical and horizontal diameters was 0.67±0.26 mm (range, 0.36-1.13 mm), and this was statistically significant (P<0.001). Horizontal sulcus diameters and horizontal white-to-white distances were not correlated (r = 0.006; P = 0.976). Conclusions: The posterior chamber appears to have a vertically oval shape. The white-to-white technique is inaccurate at predicting the horizontal diameter of the ciliary sulcus. The 35-MHz UBM may provide a good means of measuring the ciliary sulcus diameter for the implantation of a posterior chamber phakic intraocular lens.",
author = "Oh, {Jae Ryung} and Shin, {Hyung Ho} and Kim, {Jun Heon} and Kim, {Hyo Myung} and Jong-Suk Song",
year = "2007",
month = "9",
day = "1",
doi = "10.1016/j.ophtha.2006.12.018",
language = "English",
volume = "114",
pages = "1685--1688",
journal = "Ophthalmology",
issn = "0161-6420",
publisher = "Elsevier Inc.",
number = "9",

}

TY - JOUR

T1 - Direct Measurement of the Ciliary Sulcus Diameter by 35-Megahertz Ultrasound Biomicroscopy

AU - Oh, Jae Ryung

AU - Shin, Hyung Ho

AU - Kim, Jun Heon

AU - Kim, Hyo Myung

AU - Song, Jong-Suk

PY - 2007/9/1

Y1 - 2007/9/1

N2 - Purpose: To measure the ciliary sulcus diameters in 4 different axes and to determine the correlation with white-to-white distance. Design: Cross-sectional observational study. Participants: Fourteen normal volunteers with no evidence of ocular disease. Methods: Twenty-eight eyes were scanned using a 35-megahertz (MHz) ultrasound biomicroscopy (UBM) in sequential meridional scan planes at 45° increments. Horizontal white-to-white distance was measured using Orbscan IIz (Bausch & Lomb-Orbtek, Inc., Salt Lake City, UT). Main Outcome Measures: Ciliary sulcus diameter, anterior chamber diameter, white-to-white distance, and coefficient of variation. Results: The coefficient of variation for 35-MHz UBM was 0.90%. The mean diameters±standard deviations of ciliary sulci were 11.55±0.38 mm at 45°, 11.99±0.36 mm at 90°, 11.54±0.36 mm at 135°, and 11.32±0.40 mm at 180°. In all eyes, vertical diameters were greater than horizontal diameters. The mean difference between vertical and horizontal diameters was 0.67±0.26 mm (range, 0.36-1.13 mm), and this was statistically significant (P<0.001). Horizontal sulcus diameters and horizontal white-to-white distances were not correlated (r = 0.006; P = 0.976). Conclusions: The posterior chamber appears to have a vertically oval shape. The white-to-white technique is inaccurate at predicting the horizontal diameter of the ciliary sulcus. The 35-MHz UBM may provide a good means of measuring the ciliary sulcus diameter for the implantation of a posterior chamber phakic intraocular lens.

AB - Purpose: To measure the ciliary sulcus diameters in 4 different axes and to determine the correlation with white-to-white distance. Design: Cross-sectional observational study. Participants: Fourteen normal volunteers with no evidence of ocular disease. Methods: Twenty-eight eyes were scanned using a 35-megahertz (MHz) ultrasound biomicroscopy (UBM) in sequential meridional scan planes at 45° increments. Horizontal white-to-white distance was measured using Orbscan IIz (Bausch & Lomb-Orbtek, Inc., Salt Lake City, UT). Main Outcome Measures: Ciliary sulcus diameter, anterior chamber diameter, white-to-white distance, and coefficient of variation. Results: The coefficient of variation for 35-MHz UBM was 0.90%. The mean diameters±standard deviations of ciliary sulci were 11.55±0.38 mm at 45°, 11.99±0.36 mm at 90°, 11.54±0.36 mm at 135°, and 11.32±0.40 mm at 180°. In all eyes, vertical diameters were greater than horizontal diameters. The mean difference between vertical and horizontal diameters was 0.67±0.26 mm (range, 0.36-1.13 mm), and this was statistically significant (P<0.001). Horizontal sulcus diameters and horizontal white-to-white distances were not correlated (r = 0.006; P = 0.976). Conclusions: The posterior chamber appears to have a vertically oval shape. The white-to-white technique is inaccurate at predicting the horizontal diameter of the ciliary sulcus. The 35-MHz UBM may provide a good means of measuring the ciliary sulcus diameter for the implantation of a posterior chamber phakic intraocular lens.

UR - http://www.scopus.com/inward/record.url?scp=34548226462&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34548226462&partnerID=8YFLogxK

U2 - 10.1016/j.ophtha.2006.12.018

DO - 10.1016/j.ophtha.2006.12.018

M3 - Article

C2 - 17822974

AN - SCOPUS:34548226462

VL - 114

SP - 1685

EP - 1688

JO - Ophthalmology

JF - Ophthalmology

SN - 0161-6420

IS - 9

ER -