electroretinogram-recording-for-infants-children-under-anesthesia-to

Electroretinogram Recording for Infants and Children under Anesthesia to Achieve Optimal Dark Adaptation and International Standards

Electroretinogram (ERG) is the only clinical objective test available to assess retinal function. Full-field ERG (ffERG) measures the panretinal rod and ...

University of Miami

University of Miami Miller School of Medicine

To demonstrate a cost-effective, portable, and simple-to-use fundus imaging system for laboratory animals.

A portable, contact animal fundus imaging system based on Rol's GRIN lenses.

To develop a safe, noninvasive, noncontact, continuous in vivo method to measure the dehydration rate of the precorneal tear film and to compare the effectiveness of a viscoelastic agent in maintaining the precorneal tear film to that of a balanced salt solution.

A new, specular reflection-based, precorneal tear film stability measurement technique in a rabbit model: viscoelastic increases tear film stability.

Our purpose was to develop a robotic remotely operated stereo slit lamp system allowing three-dimensional stereo viewing and recording of the patient's examination via local area network, Internet, and satellite.

Robotic Remote Controlled Stereo Slit Lamp.

We present a new  instrument for measuring shape and wavefront aberrations of the primate crystalline lens, both on- and off-axis, while simulating accommodation with a motorized lens stretching system. The instrument merges spectral domain optical coherence tomography (SD-OCT) imaging and ray tracing aberrometry using an approach that senses wavefront aberrations of the lens with the OCT probing beam. Accuracy and repeatability of aberration measurements were quantified. Preliminary experiments on two human and four cynomolgus monkey lenses demonstrate the ability of the system to measure the lens shape, spherical aberration and peripheral defocus, and their changes during simulated accommodation.

System for on- and off-axis volumetric OCT imaging and ray tracing aberrometry of the crystalline lens.

The Ocular Photosensitivity Analyzer (OPA), a new automated instrument to quantify the visual photosensitivity thresholds (VPT) in healthy and light sensitive subjects, is described. The OPA generates light stimuli of varying intensities utilizing unequal ascending and descending steps to yield the VPT. The performance of the OPA was evaluated in healthy subjects, as well as light sensitive subjects with achromatopsia or traumatic brain injury (TBI). VPT in healthy, achromatopsia, and TBI subjects were 3.2 ± 0.6 log lux, 0.5 ± 0.5 log lux, and 0.4 ± 0.6 log lux, respectively. Light sensitive subjects manifested significantly lower VPT compared to healthy subjects. Longitudinal analysis revealed that the OPA reliably measured VPT in healthy subjects.

Article	Year
A portable, contact animal fundus imaging system based on Rol's GRIN lenses. Veterinary ophthalmology\| PubMed ID: 22050716	2012
A new, specular reflection-based, precorneal tear film stability measurement technique in a rabbit model: viscoelastic increases tear film stability. Investigative ophthalmology & visual science\| PubMed ID: 24948606	2014
Robotic Remote Controlled Stereo Slit Lamp. Translational vision science & technology\| PubMed ID: 29977662	2018
System for on- and off-axis volumetric OCT imaging and ray tracing aberrometry of the crystalline lens. Biomedical optics express\| PubMed ID: 30338159	2018
Automated instrument designed to determine visual photosensitivity thresholds. Biomedical optics express\| PubMed ID: 30460148	2018

Cornelis Rowaan

Biography

JoVE Journal Publications

Other Publications