Radiology

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Refractive surgery: Advanced optical coherence tomography an integral diagnostic tool

Advanced optical coherence tomography (OCT) devices used in routine screening of refractive surgery candidates can enable clinicians to obtain better results or determine if there is a reason the surgery should not take place. Advanced OCT imaging can reveal anatomic features missed by other screening instruments.

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Retinal photographs facilitate glaucoma diagnosis with new software

New software (MatchedFlicker, EyeIC) uses time series retinal photographs to convert change into motion and could improve the accuracy and speed of detecting glaucomatous progression.

Refractive surgery: Advanced optical coherence tomography an integral diagnostic tool

Pachymetry map used to find focal cornea thinning shows promise

Current topography-based methods for keratoconus screening have limitations. Researchers at Doheny Eye Institute have been working to develop a method for capturing focal thinning that is characteristic of keratoconus using optical coherence tomography-derived pachymetry maps. A method based on fitting the data to a Gaussian waveform is showing promise.

Spectral-domain OCT unit offers high-quality retinal and anterior segment imaging

A number of factors should be considered when choosing a spectral-domain optical coherence tomography system. Although the capabilities of many systems essentially are similar, some differences exist based on ease of image acquisition and quality, software versatility, and other factors that may make them the best choice for a specific practice's needs. Proprietary technology (RTVue-100, Optovue Inc.) has the capability to perform both retinal and anterior segment imaging, which may make it a versatile instrument for a general ophthalmology practice, according to one practitioner.

Tonometry measurements characterize changes in keratoconic eyes during, after crosslinking

Results of a study using a non-contact applanation tonometer (Ocular Response Analyzer, Reichert) to evaluate keratoconic eyes during and after corneal collagen crosslinking demonstrate changes in tonometer measurements that are consistent with changes in corneal thickness, hydration, and regularity.