Experience
Biomedical Optics
Advanced optical engineering for ophthalmic, retinal imaging, and biomedical instrumentation
OEA has extensive experience in a variety of biomedical and ophthalmic optics projects. Our experience includes confocal microscopy, fluorescence microscopy, retinal imaging (scanning laser ophthalmoscope, fundus cameras), intraocular lenses, and optical coherence tomography (OCT).
Retinal Imaging System
Fundus Cameras
Imaging the retina is challenging because the retina must be illuminated along the same path it is imaged. In this system, an off-axis illumination and imaging scheme is used to avoid back reflections, enabling clear, high-contrast retinal imagery.
Key Details
- System Type
- Fundus camera
- Illumination
- Off-axis scheme
- Target
- Retinal imaging
- Key Feature
- Back-reflection suppression
IOL Design & Evaluation
Intraocular Lenses
OEA has supported multiple phases of IOL design and production including image quality testing and stray light evaluation. We have designed monofocal, multi-focal, and accommodating IOLs. An important part of the design process is relating optical design metrics to clinical metrics such as visual acuity.
Key Details
- IOL Types
- Monofocal, multifocal, accommodating
- Evaluation
- Image quality & stray light
- Metrics
- Optical & clinical (visual acuity)
Variable Focus IOL
Dual Optic Accommodating Lens
A dual optic accommodating intraocular lens in which the change in spacing between two lenses allows the eye to adjust focus from distant objects to near objects, restoring a range of accommodation lost due to cataract surgery.
Key Details
- System Type
- Dual optic IOL
- Mechanism
- Variable element spacing
- Function
- Distance to near focus range
Retinal Laser Scanning System
Scanning Laser Ophthalmoscope
A scanning laser ophthalmoscope scans a laser across the retina to construct an image point by point. An afocal lens relay images the scan mirror to the pupil of the eye. The optics of the eye are then responsible for focusing the laser on the retina to produce high-resolution retinal images.
Key Details
- System Type
- Scanning laser ophthalmoscope
- Scan Method
- Point-by-point laser raster
- Relay
- Afocal lens to pupil
- Focus
- Eye optics on retina
Need optical engineering support for a biomedical project?
Contact OEA to discuss ophthalmic optics, retinal imaging systems, or IOL design.