Effect of blue-light filtering on multifocal visual-evoked potentials

Abstract

The induced short-term change in the spectral composition of the visual stimulus left neural activity at the level of the primary visual cortex largely unaffected, providing an objective account of the integrity of visual processing under this condition.

Ultraviolet or blue-filtering intraocular lenses: what is the evidence?

“…50 Several studies have investigated the impact of a blue light filter on clinical measurements including nerve fibre layer assessments, visual fields, visual-evoked potentials, and imaging of the retina during surgery. [51][52][53][54] No significant perioperative differences in RNFL measurements or signal strength between yellow and clear IOL were noted using the Cirrus SD-OCT. 51 Kim et al investigated the effect of BFIOLs on frequencydoubling technique perimetry, and found no significant difference in patients who received BFIOL from those who had clear IOLs. 52 Hoffman et al's study evaluated 20 patients by obtaining multifocal VEPs for the blue light and neutral filtering conditions at all eccentricities.…”

“…They found that no significant effects on amplitudes were obtained, and concluded that the use of BFIOL did not affect the visual processing. 53 54 Influence on blood barrier disruption Miyake and co-authors reported that eyes with a UV or BFIOL had a lower incidence of BRB disruption than eyes with an untreated IOL (one without UV or BF filtering). They took into account patient's age and used two clinical signs: the fluorescein concentration at the posterior vitreous and amount of autofluorescence at the posterior polar retina to evaluate the physiological state of the retina in longstanding pseudophakic eyes.…”

Clinical properties of a novel, glistening-free, single-piece, hydrophobic acrylic IOL

“…Werner et al used AutoCAD software (Autodesk, Inc., Mill Valley, CA, USA) to measure the deviation from an ideal square edge on 16 hydrophobic or silicone IOLs and found large variations from 4.8–338.4 μm 2 on a 40 μm reference circle to 0.2–524.4 μm 2 on a 60 μm reference circle 54. The overall variations for acrylic IOLs have been found to range from 69.5–338.4 μm 2 and for silicone IOLs to range from 4.8–281.4 μm 2 on a 40 μm reference circle 47. Nanavaty used scanning electron microscopy to evaluate 17 IOLs and found all the hydrophilic acrylic IOLs had a radius of curvature greater than 10.0 μm with one exception; all hydrophobic acrylic IOLs had a radius of curvature less than 10.0 μm, with one exception 24.…”

Spectral correction of vision and electrophysiological measurements of the eye

“…В отечественной литературе исследования влияния спектральных фильтров на электрофизиологические показатели практически отсутствуют. В зарубежной литературе описывают анализ электрофизиологических показателей при использовании как эстра-, так и интраокулярной спектральной коррекции [17,[55][56][57][58]. Во всех этих исследованиях основными цветами окрашенных светофильтров являлись серый, голубой, желтый и красный/коричневый.…”

“…В научной литературе для оценки состояния сетчатки при имплантации желтых и бесцветных ИОЛ в качестве электрофизиологических методов исследования использовали мфЭРГ и мультифокальные ЗВП (мфЗВП) [55,56]. При анализе мфЭРГ оценивали амплитуду, латентность пиков N1, P1, N2.…”