brightness.Small, lightweight and inconspicuous.High quality, dust-proof metal housing.Very short near point.With an intermediate adapter can be used with reading caps Item No. 16210-162116.Roof prism system
brightness.Small, lightweight and inconspicuous.High quality, dust-proof metal housing.Very short near point.With an intermediate adapter can be used with reading caps Item No. 16210-162116.Roof prism system
brightness.Small, lightweight and inconspicuous.High quality, dust-proof metal housing.Very short near point.With an intermediate adapter can be used with reading caps Item No. 16210-162116.Roof prism system
Switch between ring illumination and segment illumination for examining surfaces.Illumination near point for shadow-free illumination: 3.5 cm.Illumination level: approx. 6000 lx (at a working distance of
brightness.Small, lightweight and inconspicuous.High quality, dust-proof metal housing.Very short near point.With an intermediate adapter can be used with reading caps Item No. 16210-162116.Roof prism system
focus it in front of the retina (short-sightedness), or behind it (long-sightedness), or if one focus point on the retina is not attained (astigmatism). In addition, damage to the eye media, the retina or the
. What is long-sightedness? In the case of long-sightedness, the eyeball is too short. The focal point of the eye is behind the retina. Your near vision is then blurred, e.g. when reading. When the eye [...] What is short-sightedness? In the case of short-sightedness, the eyeball is too long. The focal point of the eye is in front of the retina and your distance vision will be blurred. The eye is not able [...] require a functioning retinal surface of around 2.5 degrees to the left and right of the fixation point, i.e. a visual angle of around 5 degrees in total. A reading angle is necessary as our eyes do not