Sheer curtains can help to reduce glare by allowing natural light to enter a room while diffusing and scattering the light. This can help to reduce the harshness and intensity of the glare, making it easier on the eyes and creating a more comfortable atmosphere.

However, it is important to note that sheer curtains alone may not be sufficient to block glare, especially if the glare is coming from a strong source, such as the sun at a high angle. In these cases, it may be necessary to use additional window treatments, such as blinds or shades, to block out the glare more effectively.

Overall, sheer curtains can help to reduce glare by diffusing and scattering light, but they may not be able to block out glare completely. To achieve the desired level of glare control, it may be necessary to use additional window treatments in conjunction with sheer curtains.