Shares in Western Australia's biggest biotechnology stock, pSivida Ltd, have risen 7 per cent following news that its Retisert product, licensed to Bausch & Lomb, will be co-promoted in the United States by Novartis Ophthalmics.

Shares in Western Australia's biggest biotechnology stock, pSivida Ltd, have risen 7 per cent following news that its Retisert product, licensed to Bausch & Lomb, will be co-promoted in the United States by Novartis Ophthalmics.