| Abstract: | Objective To observe the effects or the ramethylpyrazine (TMP ) on ret Ina to find o ut whe ther it can protect retlna from glaucomatous damage. Methods Twenty-four rabblts were randomIy dlvided lnto rour groups.one eye or each rabblt was model eye lnduced by 2% methyicelluious, and the other was control eye. Normal saline,TMP, timolol and a cobolnation or tlmolol and TMP were admlnlstrated to group A, B, C and D respectlvely. At the end of 4th week, eyes were excavated for Iight and electron microscoplc study. ResuIts The numbers of ganglion cells (P
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