Optical Imaging and Visualization

OIV logo

The Optical Imaging and Visualization (OIV) Lab aims to develop optical imaging technology to improve the image quality and enhance the user experience of modern imagery through 3D visualisation, particularly in the ocular imaging domains. Our primary objective is to work collaboratively with the eye-clinic and optics industry to evaluate and develop advanced eye care products/services.

Our ongoing research projects

Automated detection of ocular diseases with Artificial Intelligence

Glaucoma

In ophthalmology, Artificial Intelligence (AI) is becoming common for screening, image-interpretation, early diagnosis and guiding treatment of eye conditions. Our AI research aims are to ̶ devise and evaluate new clinically meaningful metrics for analysing ocular images, implement novel machine and deep-learning algorithms for automatic segmentation, disease detection and progression-classification of eye diseases using both fundus photographs and optical coherence tomography (OCT) images from both healthy subjects and patients undergoing treatment for eye diseases.

Multi-modal optical coherence imaging for early detection of eye diseases

multimodal optical coherence

Visual impairment and loss due to eye diseases are common problems in older Australians. Age-Related Macular Degeneration and Glaucoma are the leading eye disease causes of blindness. Early detection of these eye diseases can prevent permanent vision loss. The thrust of the project is to develop a coherence-domain microscopy system based on our previously published geometric phase liquid-crystal technology with multi-modalities features, including polarisation and fluorescence imaging techniques.

The novelty of the system lies in two folds. By using a novel geometric phase-shifting technique based on liquid crystal, technology will improve the image acquisition and simplifies the optical setup by avoiding the necessity for using the instrumentationally complex, lateral point scanning scheme. Secondly, by coupling two different imaging techniques such as polarisation and fluorescence imaging techniques will provide morphology, anatomical and physiological properties, eg. birefringence of ocular tissues. This will facilitate and enhance early diagnosis of ocular pathologies leading to more effective treatments and preventing vision loss.

Visualising tear film lipid layer using quantum dots

 

visualising tear film

Quantum dots (QDs) are semiconductor nanocrystals that can provide a range of diagnostic and therapeutic applications in ophthalmology for effective treatment of ocular diseases. Tear film evaporation is one of the key factors responsible for dry eyes that can lead to visual disturbances and contact lens in tolerance. Tear film evaporation depends on the structure of the lipid layer. Understanding the fundamental of tear dynamics has importance for developing treatment modalities for ocular surface diseases.

The thrust of this research project is to develop a novel instrumentation and imaging technique to visualise tear film layers in vivo using silicon QDS as they are non-toxic and emit discrete wavelengths of light which are very bright and stable.

3D reconstruction and visualisation of ocular disease model from OCT images

3D reconstruction

3D reconstruction of medical images helps in image interpretation with visualising depth and understanding the underlying pathological process in disease. The image is presented here is the 3D reconstruction of retinal optic nerve head micro and large vascular structure from optical coherence tomography angiography B-scans. Here at the top images showed how the microvascular density varies from healthy to normal eye. The second 3D reconstructed model could play an important role in the current optometry/ophthalmology education, training and diagnosis of glaucoma as well as any eye disease. The model was developed by one of our PhD students Nahida Akter.

Recent activities

Team photos OVI

Our Researchers

Professor Fiona Stapleton

Role: Scientia Professor

Phone: +61 2 9385 4375

Email: f.stapleton@unsw.edu.au

Office: Room 3.054 Rupert Myers Building (North Wing) UNSW, Kensington 2052

Professor Mark Willcox

Role: Professor and Director of Research

Phone: +61 9385 4164

Email: m.willcox@unsw.edu.au

Office: Room 3.057 Rupert Myers Building (North Wing) UNSW, Kensington 2052

Dr Maitreyee Roy

Role: Senior Lecturer & Co-Director of Optics and Radiometer Laboratory (ORLAB)

Phone: +61 2 9385 7874

Email: maitreyee.roy@unsw.edu.au

Office: Room 3.032 Rupert Myers Building (North Wing) UNSW, Kensington 2052

Dr Vinod Maseedupally

Role: Research Fellow

Phone: +61 2 9385 9233

Email: vinodm@unsw.edu.au

Office: Level 3, Room 3.044 Rupert Myers Building (North Wing) UNSW, Kensington 2052

Contact Us

If you are interested in collaborating with the Optical Imaging and Visualization (OIV) Laboratory at the School of Optometry and Vision Science, UNSW Sydney on a research project, please contact: 

Dr Maitreyee Roy (OIV, Team Research Leader).
Email: maitreyee.roy@unsw.edu.au

Tel: +61 2 9385 7874

Office: Room 3.032, Level 3, North Wing, Rupert Myers Building, Gate 14, Barker Street, Kensington NSW 2052
Australia