Non-mydriatic ultra-widefield diffraction-limited retinal imaging.
Opt Lett
; 49(14): 3902-3905, 2024 Jul 15.
Article
in En
| MEDLINE
| ID: mdl-39008737
ABSTRACT
We demonstrate a new non-mydriatic ultra-widefield optical coherence tomography retinal imaging system, designed with custom optics to improve the imaging field of view, lateral resolution, and patient comfort. The key motivation is to address the challenge with conventional systems that require pupillary dilation, adding time, expense, discomfort, and medical risk to the examination of the retina. Our system provides an ultrawide 100° field of view (beam scanning angle at the scanning pivot point) and maintains a lateral resolution of 20â
µm on the center. It also allows a generous working distance of 16â
mm, 2-3 times longer than existing ultra-widefield OCT imaging systems. This advanced system was able to avoid iris vignetting artifacts without pharmacological dilation and ensure diffraction-limited ultra-widefield imaging under a generalized eye model. This enables a comprehensive evaluation of retina diseases, especially those affecting the peripheral regions.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Retina
/
Tomography, Optical Coherence
Limits:
Humans
Language:
En
Journal:
Opt Lett
Year:
2024
Document type:
Article