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Message: <blockquote data-quote="looksharp65" data-source="post: 3380229" data-attributes="member: 83771">First, allow me to doubt the 0.02% reflection rate of the Swarotop. The figure seems highly unlikely to me. Unfortunately I don't have access to any numbers, but I recall learning that a high-grade multicoating has 99.8% transmission, which means that a finished lens has 0.998^2, e.g. 99.6% transmission.Although the light reflected from the surfaces may appear to have a distinct colour, and this wavelength is subtracted from the beam pencil going through the lens, it does very little to change the perceived colour bias as long as it's only two surfaces. Frankly, it is totally negligible. The residual reflection is made to keep within a very narrow wavelength range but maybe not quite monochromatic.Thus it may seem fairly bright although the actual light loss is kept at a low level.But since it's green light they're reflecting, they are not optimized for maximum green light transmission, they are optimized for everything else but green.You also ask why mineral (silicate) lenses are "clearer", which is the better question. The transparency of the lenses will decidedly affect your perceived view much more than the properties of the multicoatings.With your spectacle powers, the only reasonable high-index plastic lens is 1.74, and the high refractive index is reached by adding various substances to the polymer mix.These chemicals reduce the transmission rate, and the finished lenses may look like they are tinted, especially on photos.The high-index mineral lenses (1.7 and 1.8 at least) don't appear as brownish as the plastic, but I wouldn't bet on that. Things develop rapidly and the plastic lenses generally get better while the mineral lenses don't develop.The transmission rates are available from the lens manufacturers and the optician should be able to provide them. Best-case scenario is if transmission diagrams are available.//L</blockquote>

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