"Lost my specs (bad week) but still went ahead to SG and just came back. Drove in all the way to SG and back using nothing but the "force"
Was clear all the way from first link to my place although there was quite a few SG cars coming in to Johore when i came in via first link. "
Strongly suggest you keep a spare pair in the car - even though your eyes may not be anywhere as myopic as mine.
Best prices are in Mangga Dua in Jakarta, failing which Kip Mart or similar will give you a reasonable deal for a pair good enough for such emergencies. Truly not worth the risk to yourself or others - and others are all to be regarded as dangerous drivers.