Full-rim

• Metal frames are held together with screws, requiring occasional tightening.
• Plastic frames hold the lenses without screws, requiring little or no maintenance other than an occasional realignment of the temples.
• All lens materials are available in this style.

Semi-rimless (also referred to as "grooved rimless")

• Available in both metal and plastic.
• Usually indicated by a nylon cord stretched beneath the eyeglass lens.
• Trivex or Polycarbonate is recommended to prevent lens chipping.
• Glass lenses are not available in this style.

Rimless (also referred to as "drill mount" or "3-piece mount")

• Lenses in these frames are held by screws or compression devices.
• Rimless frames can give the appearance of not wearing glasses.
• Trivex lenses are recommended.
• Glass lenses are not available in this style.