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IMPROVED INTRAOCULAR LENS AND AN APPROPRIATE METHOD FOR ITS MANUFACTURE
专利权人:
ЕН Фредерик (FR)
发明人:
ЕН Фредерик (FR)
申请号:
RU2014129644
公开号:
RU2014129644A
申请日:
2013.01.22
申请国别(地区):
RU
年份:
2016
代理人:
摘要:
1. An intraocular lens, characterized in that it has an optical axis (y), a central zone (Z1) and a peripheral zone (Z2, Z3, Z4), essentially symmetrical with respect to the specified optical axis (y) and located essentially perpendicular to it wherein said central zone (Z1) extends a first distance (Pp / 2) and a peripheral zone (Z2, Z3, Z4) extends from a first distance (Pp / 2) to the edge of the intraocular lens in which the central region (Z1) has nominal optical power, and the peripheral zone (Z2, Z3, Z4) has a radius of curvature, continuously and uniformly о depending on the distance (x) from the optical axis (y), so that the target asphericity is obtained at a second distance (De) relative to the optical axis (y), and the first (Pp / 2) and second (De) distances are calculated based on from the diameter (Pp) of the pupil under photopic conditions and the diameter (Pm) of the pupil under mesopic conditions. 2. The intraocular lens according to claim 1, characterized in that the peripheral zone (Z2, Z3, Z4) contains an emmetropia zone (Z2) extending between the first distance (Pp / 2) and the second distance (De), in which the radius of curvature changes continuously and strictly uniformly in the zone (Z2) of emmetropia. 3. An intraocular lens according to claim 2, characterized in that the radius of curvature varies depending on the distance from the optical axis, at least in part according to the trigonometric function ([20]) in the zone (Z2) of emmetropia. An intraocular lens according to claim 2, characterized in that the radius of curvature varies linearly depending on the distance from the optical axis in the emmetropia zone (Z2). 5. An intraocular lens according to any one of the preceding paragraphs, characterized in that the peripheral zone (Z2, Z3, Z4) contains an external zone (Z3, Z4) extending beyond the second distance (De), where the radius of curvature changes continuously and uniformly. 6. Intra1. Интраокулярная линза, отличающаяся тем, что и
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