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cataract on the detailed inspection of a comprehensive and accurate evaluation of the Eye is an important part of the inspection. In the evaluation of the cataract, the instrument does not have to consider whether the cataract, should also be given to patients with cataract in the visual and functional capacity of the overall impact.
, therefore, should include a careful evaluation of cataract patients asked by occupation, personal interests, social activities, and engage in these activities whether or not there is the potential damage to vision-related factors. At the same time, also cau Read more »

At present, visual inspection of the main application of international standards on a number of visual form and visual form. Should check his eyes were far short, more or less in order to estimate the extent of visual impairment caused by cataracts.
of poor eyesight, should be a routine sense of light, light positioning, color inspection. In a dark room, covered with eye health, suffering from 5m in front holding a candle light, so that patients identify whether there was a candlelight vigil to determine whether a sense of light and then, from nine different directions, determined the di Read more »

seized in the shadow check, check and check those who have been away from 0.5m (or 1m) and the relative distance to sit, who checked through the line of sight to check on the ears From a distance, direction, inspection will be seized on the mirror reflection of the shadow into the light Were seized inside the eye, light eye pupil was seized, were seized from the flat found video film seized at the time.
if each of the two vertical warp light of the nature of the campaign, although the movement or velocity of the same nature but different, eyes found there was to know the existence of ast Read more »

ball convex lens with the degree of astigmatism determination of the casing to the top, so bring light on the axial line by using convex lens ball alone in this by-line and shun the move Light band will be on the shelves casting lenses minus degrees The other main line through the lens of the increase in degrees, the lenses needed for the degree of astigmatism.
rehabilitation of 15 cases of a high degree of astigmatism and farsightedness: casing operation, high home straight. Frederick found the video online by the difference between a light fixed-shun, with dark vertical light, slow, cl Read more »

a, the surface of the lens using high-tech non-spherical design, through the mirror at the center and the edge of the area and into the light of the eyes are the same as the focal length, which makes imaging lenses Road acceptable range of light, the light entering the eye more Good visual effects.
b, aspheric lens close to the center and the periphery degrees, objects do not produce aberration.
c, the traditional spherical lens around the center degrees higher than the prism degree; sphere rather than through the lens of precision grinding, high-temperature softening, Ping-flow, the deg Read more »