Corneal collagen cross-linking may yield insufficient astigmatic correction

Recently announced by OSN, a European Journal of Ophthalmology article claims that biomechanical changes induced by corneal collagen cross-linking in keratoconic corneas correlated with insignificant astigmatic correction, according to a study.   "Cross-linking is able to induce a corneal astigmatic change, but it is variable, not predictable, and insufficient to provide an effective astigmatic correction," the study authors said.   To read the abstract click here.

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NeurOptics Introduces First Hand-held Variable Light Condition Pupillometer

NeurOptics, the worldwide leader in pupillometry, today announced the availability of the new VIP-200 Variable Pupillometer for the measurement of pupil size under varying light conditions to enhance opportunities for successful outcomes for refractive surgery and premium intraocular lens candidates. Using infrared imaging technology, the VIP-200 measures the pupil 30 times per second over a two-second period at scotopic, low mesopic and high mesopic light levels and provides the average pupil diameter and standard deviation with accuracy exceeding 0.1 millimeter. Pupil size measurement during a pre-operative evaluation is crucial for today's refractive surgeons when screening candidates for LASIK, and is particularly helpful for optimizing the premium IOL selection for the patient based upon the patient's stated preferences about the level of vision he or she values most (e.g., distance, intermediate or near), occupation, lifestyle, and frequency of nighttime driving. Pupil size affects vision with any IOL, but even more so for so-called "pupil-dependent IOLs".

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