Glasses hinges - The small joints connecting the frame front to the temples (arms) of the glasses. They allow the glasses to fold and unfold. High-quality hinges contribute to the durability and comfort of your glasses, making them more resilient to wear and tear.

Glasses cylinder - The cylinder (CYL) value indicates the amount of lens power needed to correct the uneven curvature of the cornea. The CYL power can be written in + or - Cyl. The CYL power will always have an axis direction. This value is combined with the axis to properly align the corrective power in the lenses, ensuring sharper vision.

Glasses axis - A component of an eyeglass prescription for astigmatism, the axis is a number between 0 and 180 degrees that specifies the orientation of the cylinder correction. It ensures that the lenses are positioned correctly to compensate for the irregular shape of the cornea, helping to provide clear vision.

Dry eyes - A condition where the eye may not produce enough tears or the tears produced are of poor quality ,leading to irritation, redness, and a gritty feeling. Dry eyes can be caused by various factors, such as tear evaporation, poor blinking and blocked meibomian glands. Risk factors include aging, certain medications, environmental conditions, or prolonged screen time. Treatment may include artificial tears, lifestyle changes, or other medical interventions.

Driving glasses are glasses/lenses may incorporate an anti-reflective coating that eliminates the glare from street lights or headlights, helping drivers by reducing the risk of being blinded by light. They're often worn at night, but driving sunglasses also exist.