Complete 360° circumferential SSOCT gonioscopy of the iridocorneal angle

Ryan P. McNabb; Anthony N. Kuo; Joseph A. Izatt

doi:10.1117/12.2039574

28 February 2014 Complete 360° circumferential SSOCT gonioscopy of the iridocorneal angle

Ryan P. McNabb, Anthony N. Kuo, Joseph A. Izatt

Proceedings Volume 8930, Ophthalmic Technologies XXIV; 89300I (2014) https://doi.org/10.1117/12.2039574
Event: SPIE BiOS, 2014, San Francisco, California, United States

Abstract

The ocular iridocorneal angle is generally an optically inaccessible area when viewed directly through the cornea due to the high angle of incidence required and the large index of refraction difference between air and cornea (n_air = 1.000 and n_cornea = 1.376) resulting in total internal reflection. Gonioscopy allows for viewing of the angle by removing the aircornea interface through the use of a special contact lens on the eye. Gonioscopy is used clinically to visualize the angle directly but only en face. Optical coherence tomography (OCT) has been used to image the angle and deeper structures via an external approach. Typically, this imaging technique is performed by utilizing a conventional anterior segment OCT scanning system. However, instead of imaging the apex of the cornea, either the scanner or the subject is tilted such that the corneoscleral limbus is orthogonal to the optical axis of the scanner requiring multiple volumes to obtain complete circumferential coverage of the ocular angle. We developed a novel gonioscopic OCT (GOCT) system that images the entire ocular angle within a single volume via an “internal” approach through the use of a custom radially symmetric gonioscopic contact lens. We present, to our knowledge, the first complete 360° circumferential volumes of the iridocorneal angle from a direct, internal approach.

Citation Download Citation

Ryan P. McNabb, Anthony N. Kuo, and Joseph A. Izatt "Complete 360° circumferential SSOCT gonioscopy of the iridocorneal angle", Proc. SPIE 8930, Ophthalmic Technologies XXIV, 89300I (28 February 2014); https://doi.org/10.1117/12.2039574

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
9 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Optical coherence tomography

Cornea

Mirrors

Independent component analysis

Image segmentation

Tumors

Imaging systems

Show All Keywords

Keywords/Phrases

Search In:

Publication Years