If glasses slide off the wearer’s nose despite a correct fit, what is the best solution?

When glasses slide off the wearer's nose despite a correct fit, adjusting the nose pads stands out as the most effective solution. The nose pads provide crucial support and stability for the glasses on the wearer’s face. If the pads are positioned in a way that does not effectively grip the nose or are not size-appropriate for the wearer, this can lead to slippage.

By adjusting the nose pads, you can modify their height and angle, which can help create a more secure fit. If the nose pads are too flat or too far apart, they won't cradle the nose adequately, allowing the glasses to slide down. Proper adjustment ensures that the pads sit comfortably against the nose without excessive pressure and improves the overall stability of the frames.

Other options, while they may provide some degree of adjustment, do not address the primary issue at hand. Adjusting the temples or tightening them behind the ears may help with the overall fit but may not specifically counteract the slippage caused by inadequate nose pad support. Additionally, simply instructing the wearer to get used to the glasses does not provide a practical solution to the immediate concern of fit and comfort. Therefore, focusing on the nose pads is the most direct and effective approach to prevent slippage.