Bifocals

Bifocals are eyeglasses with lenses that have two distinct optical powers, designed to correct both near and distant vision. The top portion of the lens provides focus for distant objects, while the lower portion contains a segment for near vision tasks such as reading. This segmented design allows wearers to avoid switching between multiple pairs of glasses, offering convenience and clarity for a variety of visual needs. Modern bifocals often include features like scratch-resistant coatings and UV protection for added durability and eye health. They are most commonly prescribed for people experiencing presbyopia, the age-related loss of focusing ability. The physical design of bifocals makes them different from trifocals which have 3 levels of vision correction. These are an evolution from early glasses using two separate lenses for each distance.

Bifocals meaning with examples

• Grandma carefully positioned her bifocals before threading the needle, her hands steady as she guided the thread through the tiny eye. The bifocals allowed her to see both the small detail up close and the room around her. She appreciated the convenience they offered. She had been wearing her bifocals for many years and had grown accustom to them.
• He squinted at the menu, then shifted his gaze downwards, as if the small print was in a different plane. The bifocals quickly corrected the blurry view, allowing him to read the descriptions of the meals. Then he sat back and studied the room looking at the people with the distant vision side of his lenses, then turned back to the menu.
• The jeweler held a magnifying glass to the watch, but then paused, lowered his head, and adjusted his bifocals. He then focused on the small movement parts of the watch. His bifocals combined the power of the lens and his distance vision. Without his bifocals he would have had a difficult time
• After the cataract surgery, she needed bifocals to fully restore her vision. The doctors had replaced the lenses, but she needed bifocals for close work, as she couldn’t see. She had to adapt to the change and now uses her bifocals for all of her activities