CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) - USD ($)	3 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Statement of Stockholders' Equity [Abstract]
Exercise of stock options, net shares withheld	3,592
Proceeds private placement stock, net of issuance costs		$ 23,000

Proceeds private placement stock, net of issuance costs

No definition available.

Name:	PEYE_ProceedsPrivatePlacementStockNetOfIssuanceCosts
Namespace Prefix:	PEYE_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration