Claim 1: eye composition of water, characterized by: (a) fat derivatives used in the application, represented by formula (1)；50. M and N are hydrogen, hydrogen Xi, halogen, low tar, hydroxide (low),Low alkane or oxo, wherein at least one l and m are a non hydrogen group, and rings of five members have at least one double link； a is - CH3, CH2OH, coch2oh, or their functional derivatives； B is a simple link, ch2-ch2,-CH=CH---C...-CH2-CH2-CH2-CH=CH-CH2---CH2-CH=CH---C-CH2...O-CH2-C-；Z is one or a simple link selected from a set of formulas (2), wherein R4 and R5 are hydrogen, hydrogen Xi, halogen, lower hydrocarbon, low oxygen or hydroxide (lower),The condition is that R4 and R5 are not the same hydrogen Xi and alcoxi； R1 is a saturated or unsaturated residue of liquefied hydrogen carbide, which is not replaced or replaced by halogen, low tar, hydrogen Xi, oxo, arilo or heterocyclic group, And at least one liquefied hydrogen carbon atom is optionally replaced by oxygen, nitrogen or sulfur； RA is a saturated or unsaturated low or medium liquefied hydrogen, which is not replaced or replaced by halogen, oxo, hydroxi, low tar, low oxygen or low alkane, Bicycle (low)CYCLOPROPYLENE glycol (Times)Arilo, ariloxi, heterocyclic or heterocyclic epoxy group； alcoxi low； alcoiloxi low； cycloquilo low；1. Cyclopropylucci (Times)；Arilo； ariloxi； heterocyclic group； or heterocyclic epoxy group in propylene hydrocarbon, or at least one carbon atom, optionally replaced by oxygen, nitrogen or sulfur； (b) sorbide of a polyoxyethylene fatty acid； (c) an edethic compound； (d) A boric acid and a borate； (E) an acceptable water vehicle for drug use； and (f) benzarol chloride benzene not more than 0.005% P / v. Retification 6:1-4, characterized by fatty acid derivatives of isopropyl n-acrylic acid.Reivindicación 1: Una composición oftálmica acuosa caracterizada porque comprende: (a) un derivado de ácido graso utilizado en la presente solicitud que está representado por la fórmula (1), donde L,
