Stereo Vision based Optic Nerve Head 3D Reconstruction using a Slit Lamp fitted with Cameras: Performance Trial with an Eye Phantom

TY - GEN

T1 - Stereo Vision based Optic Nerve Head 3D Reconstruction using a Slit Lamp fitted with Cameras

T2 - 2021 IEEE International Instrumentation and Measurement Technology Conference, I2MTC 2021

AU - Coghill, Ian

AU - Giardini, Mario Ettore

N1 - Publisher Copyright: © 2021 IEEE.

PY - 2021/5/28

Y1 - 2021/5/28

N2 - Preventing vision loss from glaucoma, the second leading cause of blindness globally, relies on early detection and intervention. A key clinical indicator for early detection is structural change of the optic nerve head (ONH), which impacts the ONHs three-dimensional footprint on the retina. Clinically, such footprint is commonly assessed by subjective observation through a slit lamp, with significant inter- and intra-observer variability. Objective devices that rely on 3D imaging show promise in increasing diagnostic accuracy within clinics but are prohibitively expensive for many. In previous work, we demonstrated the initial feasibility of obtaining 3D surface images by applying stereo vision techniques to a slit lamp fitted with low-cost cameras. In this paper, we present the assessment of the precision and accuracy of our system with ONH targets in an eye phantom. Quantitative reconstructions, referenced to ground truth data, were obtained. Current results, albeit promising, suggest that more work is likely needed to improve accuracy and precision to a clinically significant level.

AB - Preventing vision loss from glaucoma, the second leading cause of blindness globally, relies on early detection and intervention. A key clinical indicator for early detection is structural change of the optic nerve head (ONH), which impacts the ONHs three-dimensional footprint on the retina. Clinically, such footprint is commonly assessed by subjective observation through a slit lamp, with significant inter- and intra-observer variability. Objective devices that rely on 3D imaging show promise in increasing diagnostic accuracy within clinics but are prohibitively expensive for many. In previous work, we demonstrated the initial feasibility of obtaining 3D surface images by applying stereo vision techniques to a slit lamp fitted with low-cost cameras. In this paper, we present the assessment of the precision and accuracy of our system with ONH targets in an eye phantom. Quantitative reconstructions, referenced to ground truth data, were obtained. Current results, albeit promising, suggest that more work is likely needed to improve accuracy and precision to a clinically significant level.

KW - 3D Reconstruction

KW - Eye Phantom

KW - Optic Nerve Head

KW - Slit Lamp

KW - Stereo Vision

UR - https://www.scopus.com/pages/publications/85113713791

U2 - 10.1109/I2MTC50364.2021.9459972

DO - 10.1109/I2MTC50364.2021.9459972

M3 - Conference contribution

AN - SCOPUS:85113713791

SN - 9781728195407

T3 - IEEE Instrumentation and Measurement Technology Conference

SP - 1

EP - 6

BT - 2021 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)

PB - IEEE

Y2 - 17 May 2021 through 20 May 2021

ER -