SOFT CONTACT LENS AND METHOD FOR PREVENTING ADSORPTION OF SOFT CONTACT LENS ONTO CORNEA

Title:

SOFT CONTACT LENS AND METHOD FOR PREVENTING ADSORPTION OF SOFT CONTACT LENS ONTO CORNEA

Document Type and Number:

WIPO Patent Application WO/2017/175705

Kind Code:

A1

Abstract:

Provided are: a contact lens, which is composed of a silicon compound that can be prevented from being adsorbed onto the cornea while being worn, and which has an excellent fitting property; and a method for preventing the adsorption of the contact lens onto the cornea. This contact lens 10 is a low hydrous or nonhydrous soft contact lens and is provided with: a circular central part 1 positioned at the center; an intermediate part 2 which is positioned at the outer circumference side of the central part 1 and forms a coaxially centered annular shape with the central part 1; and an outer edge part 3 which is positioned at the outer circumference side of the intermediate part 2 and forms a coaxially centered annular shape with the central part 1. The contact lens 10 is characterized in that the radii of curvature of the central part 1, the intermediate part 2, and the outer edge part 3 are different from each other, and the sagittal depth of the contact lens 10 is within the range of the sagittal depth when the entire contact lens is formed such that the radius of curvature of the outer edge part 3 is in the range of ±0.2 mm.

Inventors:

NAKAMURA AKIRA (JP)
FUKUSHIMA TSUTOMU (JP)
KITAGAWA RUMIKO (JP)
NAKAMURA MASATAKA (JP)

Application Number:

PCT/JP2017/013913

Publication Date:

October 12, 2017

Filing Date:

April 03, 2017

Export Citation:

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Assignee:

SEED CO LTD (JP)
TORAY INDUSTRIES (JP)

International Classes:

G02C7/04

Domestic Patent References:

WO2011102356A1

2011-08-25

Foreign References:

JP2013544132A	2013-12-12
JP2006525530A	2006-11-09
JPH0743698U	1995-09-05
JP2001516462A	2001-09-25
JP2007195818A	2007-08-09

Other References: