Over half of tested reading glasses fail to list key details to prevent eye strain

More than half of the reading glasses tested by Hong Kong’s consumer watchdog failed to label pupillary distance, a key measurement for aligning lenses to ensure clear vision and reduce the risk of eye strain. The Consumer Council tested 17 models of ready-to-wear reading glasses between January and May, with the claimed magnifying power for all models at +2.50 dioptres – commonly known as 250 degrees. Prices ranged from HK$8 to HK$490 (US$1 to US$62.50). The watchdog’s results showed that...