Comparative Study of Anterior Chamber Angle and Depth Recorded with Pentacam and AS-OCT SD “Spectralis”

Main Article Content

E. Pateras
N. Morogiannis

Abstract

Aims: To compare the anterior chamber angle values recorded by Pentacam and AS-OCT SD “Spectralis” (Heidelberg Engineering) and present the correlation between the two devices.

Sample and Study Design: A total of 50 patients were examined at the Private Ophthalmology Clinic O.M.M.A. Ophthalmological Institute. All participants volunteer to participate in this study where the data was kept anonymous. Patients aged 18-45 years without a pathological history were selected. All of them were emmetropes or with ametropia ranged ±0.75 D. There was no separation between hyperopic, myopic or emmetropic patients.

Place and Duration of Study: University of West Attica Dept Biomedical Science Course Optics & Optometry in collaboration with Private Ophthalmology Clinic O.M.M.A. during the period between January 2019 to October 2019.

Methodology: In this study, two basic structures of the eye are measured with the help of two devices of different principle of operation. Specifically, the study of the angle of the anterior chamber (ACA) as well as the depth of the chamber (ACD). The two devises are compared.

Results: The ACA for both devices had mean difference of -2,004° for the R.E. while the mean difference for L.E. was 1,986°. Pentacam arithmetic mean ACA (R.E.) was 37,638 ± 2,98° and AS-OCT “Spectralis” 35,766 ± 2,90° with Correlation coefficient 0,7063 (P<0,0001). Pentacam arithmetic mean ACA (L.E.) was 37,638 ± 2,98° and AS-OCT “Spectralis” 35,652 ± 2,79° with Correlation coefficient 0,7569 (P<0,0001). The ACD for both devices had mean difference of -0,3028 for the R.E. while the mean difference for L.E. was -0,2860. Pentacam arithmetic mean ACD (R.E.) was 3,5866 ± 0,20 and AS-OCT “Spectralis” 3,2838 ± 0,20 with Correlation coefficient 0,4201 (P=0,0024). Pentacam arithmetic mean ACD (L.E.) was 3,558 ± 0,21 and AS-OCT “Spectralis” 3,2720 ± 0,20 with Correlation coefficient 0,4023 (P=0,0038).

Conclusion: Values of ACA measured by Pentacam and AS-OCT “Spectralis” were similar within the sample population of normal eyes right and left (P<0,0001). ACD measured by Pentacam and AS-OCT “Spectralis” showed also similar results the sample population of normal eyes for the right eye (P=0,0024) and left (P=0,0038).

Keywords:
Anterior chamber angle, AS-optical coherence tomography, Spectralis, comparison, Pentacam, aqueous humor, anterior chamber depth

Article Details

How to Cite
Pateras, E., & Morogiannis, N. (2020). Comparative Study of Anterior Chamber Angle and Depth Recorded with Pentacam and AS-OCT SD “Spectralis”. Ophthalmology Research: An International Journal, 13(3), 1-12. https://doi.org/10.9734/or/2020/v13i330167
Section
Original Research Article

References

Lee Ann Remington, Denise Goodwin. Clinical Anatomy and Physiology of the Visual System, 3rd Edition, Butterworth-Heinemann; 2011.

ISBN: 9781437719260.

Ansari MW, Nadeem A. Atlas of ocular anatomy. Springer International Publishing; 2016.

ISBN: 978-3-319-42781-2.

Khurana. Anatomy & physiology of eye. 2nd Edition. CBS Publisher & Distributors P Ltd; 2011.

ASIN: B011DC5DPA

Snell Richard S, Lemp Michael A. Clinical anatomy of the eye” 2nd (second) Edition, Wiley-Blackwell Wiley-Blackwell; 2 edition; 1997.

ASIN: B00E6T6T10.

Héctor Barajas M. Atlas of the human eye: Anatomy & Biometrics Palibrio; 2015.

ISBN - 13:9781506510330

Allen L, Burian H, Braley A. The anterior border ring of Schwalbe and the pectinate ligament. Arch Ophthalmol. 1955;53:799.

Ashton N, Brini A, Smith R: Anatomical studies of trabecular meshwork of normal human eye. Br J Ophthalmol. 1956;40:257.

Holmberg A: Schlemm’s canal and the trabecular meshwork. An electron Microscopic study of the normal structure in man and monkey (cerecopithecus ethiops). Doc Ophthalmol (Den Haag). 1965;19:339.

Moses RA, Grodzki WJ Jr: The scleral spur and scleral roll. Invest Ophthalmol Vis Sci. 1977;16:925.

Fine B. Structure of the trabecular meshwork and the canal of Schlemm. Trans Am Acad Ophthalmol Otolaryngol. 1966;70:777.

Bill A. Scanning electron microscopic studies of the canal of Schlemm. Exp Eye Res. 1970;10:214.

Vranka JA, Kelley MJ, Acott TS, Keller KE. Extracellular matrix in the trabecular meshwork: Intraocular pressure regulation and dysregulation in glaucoma. Exp. Eye Res. 2015;133:112-25.

Johnson Douglas H, Trabecular Meshwork and Uveoscleral Outflow Models. Journal of Glaucoma. 2005;14(4):308-310.

DOI: 10.1097/01.ijg.0000169397.32674.5e

Sudha A. Anatomy, physiology, histology and normal cytology of eye. J Cytol. 2007;24:16-9.

Derek W, et al. Anatomy and physiology of the cornea. Journal of Cataract & Refractive Surgery. 2011;37(3):588-598.

Ernst R. Tamm. The trabecular meshwork outflow pathways: Structural and functional aspects. Experimental Eye Research. 2009;88(4):648-655.

Available:https://doi.org/10.1016/j.exer.2009.02.007

Wallace LM Alward, Reid A. Longmuir. Color Atlas of Gonioscopy, 2nd Ed. American Academy of Ophthalmology; 2008.

ISBN-13: 978-1560558965

Goldsmith JA, Li Y, Chalita MR, et al. Anterior chamber width measurement by high-speed optical coherence tomography. Ophthalmology; 2005.

Radhakrishnan S, Goldsmith J, Huang D, et al. Comparison of optical coherence tomography and ultrasound biomicroscopy for detection of narrow anterior chamber angles. Arch Ophthalmol. 2005;123:1053-1059.

Radhakrishnan S, Goldsmith J, Huang D, et al. Optical coherence tomography imaging of the anterior chamber angle. Ophthalmol Clin North Am. 2005;18: 375–381.

Lackner B, Schimidger G, Skorpik C. Validity and repeatability of anterior chamber depth measurements with Pentacam and Orbscan. Optom Vis Sci. 2005;82:858–861.

Foster PJ, Buhrmann R, Quigley HA, Johnson GJ. The definition and classification of glaucoma in prevalence surveys. Br J Ophthalmol. 2002;86:238–242.

Samin Hong, et al. Detection of occludable angles with the pentacam and the anterior segment optical coherence tomography. Yonsei Med J. 2009;50(4): 525–528.

Jeong-Ho Yi, et al. Anterior chamber measurements by pentacam and AS-OCT in eyes with normal open angles. Korean J Ophthalmol. 2008;22(4):242–245.

Shajari Mehdi, et al. Comparison of corneal diameter and anterior chamber depth measurements using 4 different devices cornea. 2016;35(6):838-842.

DOI: 10.1097/ICO.0000000000000840

Jing Dong , et al. Comparison of axial length, anterior chamber depth and intraocular lens power between IOL Master and ultrasound in normal, long and short eyes. Plos One; 2018.

Available:https://doi.org/10.1371/journal.pone.0194273

Elbaz U, Barkana Y, Gerber Y, Avni I, Zadok D. Comparison of different techniques of anterior chamber depth and keratometric measurements. Am J Ophthalmol. 2007;143(1):48–53.

PMID:17101110

Hashemi H, Yazdani K, Mehravaran S, Fotouhi A. Anterior chamber depth measurement with a-scan ultrasonography, Orbscan II, and IOL Master. Optom Vis Sci. 2005;82(10):900–904.

PMID:16276322

Porporato N, Baskaran M, Husain R. et al. Recent advances in anterior chamber angle imaging. Eye. 2020;34:51–59.

Available:https://doi.org/10.1038/s41433-019-0655-0

Bonomi L, et al. Epidemiology of angle-closure glaucoma: Prevalence, clinical types, and association with peripheral anterior chamber depth in the Egna-Neumarket Glaucoma Study. Ophthalmology. 2000;107:998–1003.

Yukiko Shimizu, et al. Comparison of the anterior chamber angle structure between children and adults. Journal of American Association for Pediatric Ophthalmology and Strabismus. 2017;21(1):57-62.

Available:https://doi.org/10.1016/j.jaapos.2016.10.005https
://www.pentacam.com/fileadmin/use_upload/pentacam.de
/downloads/interpretationsleitfaden/interpretation_guidelin
e_3rd_edition_0915.pdf

Available:https://business-lounge.heidelbergengineering.com
/us/en/products/spectralis/anterior-segment-module/