Noise sensitivity may develop as a result of an abnormality in the middle or inner ear. Trauma to the ear may cause noise sensitivity. Noise sensitivity may be present with migraine headaches. Noise sensitivity may occur as a side effect of certain medications. Noise sensitivity may occur as a result of an ear infection. People with misophonia find it impossible to tolerate certain sounds.
Types of Eyeglass Lenses. Single Vision. The single vision lens is prescribed if you need correction for one field of vision, either for distance or items up close. Eyeglass Lens Direct offers a number of options for the single vision lens wearer.
The business of manufacturing eyeglass frames and lenses made its most dramatic leap in the twentieth century with the rise of plastics. Plastic lenses are lighter in weight and can be manufactured as bifocals, trifocals, and quadrifocals to correct a wider range of vision problems.