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Abstract

An ophthalmic preparation which comprises a fumagillol derivative represented by the general formula(I): ##STR1## wherein R.sup.1 is hydrogen; R.sup.2 is a halogen, N(O).sub.m R.sup.5 R.sup.6, N.sup.+ R.sup.5 R.sup.6 R.sup.7 .multidot.X.sup.-, S(O).sub.n R.sup.5 or S.sup.+ R.sup.5 R.sup.6 .multidot.X.sup.-, wherein R.sup.5, R.sup.6 and R.sup.7 represent independently a substituted or unsubstituted hydrocarbon group or a substituted or unsubstituted heterocyclic group; X.sup.- represents a counter anion; m represents 0 or 1; n represents an integer from 0 to 2; or R.sup.5 and R.sup.6 together with the adjacent nitrogen or sulfur atom may form a substituted or unsubstituted nitrogen-or sulfur-containing heterocyclic group which may form a condensed ring; or R.sup.1 and R.sup.2 are combined to represent a chemical bond; R.sup.3 is a substituted or unsubstituted 2-methyl-l-propenyl group or a substituted or unsubstituted isobutyl group; A is oxygen or NR.sup.8, wherein R.sup.8 represents hydrogen, a substituted or unsubstituted lower alkyl group or a substituted or unsubstituted aryl group; and R.sup.4 is hydrogen, a substituted or unsubstituted hydrocarbon group or a substituted or unsubstituted acyl group and a salt thereof is useful for inhibiting corneal opacification occurring after ophthalmic surgery.

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