Suction-Assisted One-Piece Self-Retaining Wide-Angle Contact Lens for Vitrectomy

Abstract

Introduction: We have developed a suction-assisted one-piece self-retaining wide-angle contact lens for vitrectomy. Design: The wide-angle contact lens is a one-piece lens without the case, making it lightweight. The contact inferior surface is enhanced by four quadrant plate extensions. A metal housing is attached to the side of the plate extension with an opening at the inferior surface. A negative suction device is attached to the housing of the lens. Method of Use: A drop of viscoelastic is placed between the lens and the cornea. Suction created by a syringe device holds the contact lens on the cornea. Conclusion: This specially designed lens is lightweight and eliminates the need for a skilled assistant to stabilize the contact lens. It provides a stable well-centered view of the peripheral fundus during vitreous surgery.

Outcomes of a novel bubble ultra‐wide field viewing system for vitreoretinal surgery

“…As with the conventional wide‐angle viewing systems, distortion and blurring occurred at the edges of the peripheral visual field and may be reduced by slightly tilting the eye, but in systems using a contact lens, this may result in the lens shifting. Various modifications have been suggested to improve contact lens stability (Shah & Chalam 2003; Shah & Chalam 2003), but our technique requires only a cotton or iron ring to keep the lens stable while the eye is tilted.…”

Outcomes of a novel bubble ultra‐wide field viewing system for vitreoretinal surgery

“…As with the conventional wide‐angle viewing systems, distortion and blurring occurred at the edges of the peripheral visual field and may be reduced by slightly tilting the eye, but in systems using a contact lens, this may result in the lens shifting. Various modifications have been suggested to improve contact lens stability (Shah & Chalam 2003; Shah & Chalam 2003), but our technique requires only a cotton or iron ring to keep the lens stable while the eye is tilted.…”

Autoclavable Two-Piece Noncased Wide-Angle Contact Lens System for Vitrectomy

“…The conventional wideangle lens has an outer metal casing that envelopes the lens components. Making a lens without the metal case can reduce the weight of the lens [2].…”

Outcomes of a novel bubble ultra‐wide field viewing system for vitreoretinal surgery

“…As with the conventional wide‐angle viewing systems, distortion and blurring occurred at the edges of the peripheral visual field and may be reduced by slightly tilting the eye, but in systems using a contact lens, this may result in the lens shifting. Various modifications have been suggested to improve contact lens stability (Shah & Chalam 2003; Shah & Chalam 2003), but our technique requires only a cotton or iron ring to keep the lens stable while the eye is tilted.…”

Autoclavable Two-Piece Noncased Wide-Angle Contact Lens System for Vitrectomy

“…The conventional wideangle lens has an outer metal casing that envelopes the lens components. Making a lens without the metal case can reduce the weight of the lens [2].…”

Outcomes of a novel bubble ultra‐wide field viewing system for vitreoretinal surgery

“…As with the conventional wide‐angle viewing systems, distortion and blurring occurred at the edges of the peripheral visual field and may be reduced by slightly tilting the eye, but in systems using a contact lens, this may result in the lens shifting. Various modifications have been suggested to improve contact lens stability (Shah & Chalam 2003; Shah & Chalam 2003), but our technique requires only a cotton or iron ring to keep the lens stable while the eye is tilted.…”

Autoclavable Two-Piece Noncased Wide-Angle Contact Lens System for Vitrectomy

“…The conventional wideangle lens has an outer metal casing that envelopes the lens components. Making a lens without the metal case can reduce the weight of the lens [2].…”