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

Abstract

Purpose: To describe an autoclavable wide-angle two-piece noncased contact lens system (two lenses: equatorial and wider-angle lens) for vitrectomy. Design: The inferior lens is made of an autoclavable plastic with a concave contact surface of 7.7 mm and the superior lens is a convex glass lens. The superior lens is mounted on the inferior one to make the lens assembly. Result: The equatorial lens has a power of +81 D and a field of view of 80–96°, while the wider-angle lens power is +151 D and the field 110–120°. The lens is kept on the cornea upon a drop of viscoelastic substance. An assistant holds it with a conventional lens holder. The lens is easy to sterilize by autoclaving and does not require expensive gas sterilization or potentially injurious chemical sterilization. Conclusion: This lens system provides a panoramic wide-angle view of the retina during vitreous surgery. The autoclaving makes this lens system cost-effective and fast to reuse.

Lightweight Autoclavable Wide-Angle Contact Lens for Vitreous Surgery

“…2 Steam autoclaving can be used for sterilization, but fogging is a limitation in obtaining a clear view of the fundus. 3,4 We describe an improvised perforated lightweight autoclavable wide-angle contact lens that avoids fogging.…”

Lightweight Autoclavable Wide-Angle Contact Lens for Vitreous Surgery

“…2 Steam autoclaving can be used for sterilization, but fogging is a limitation in obtaining a clear view of the fundus. 3,4 We describe an improvised perforated lightweight autoclavable wide-angle contact lens that avoids fogging.…”

Lightweight Autoclavable Wide-Angle Contact Lens for Vitreous Surgery

“…2 Steam autoclaving can be used for sterilization, but fogging is a limitation in obtaining a clear view of the fundus. 3,4 We describe an improvised perforated lightweight autoclavable wide-angle contact lens that avoids fogging.…”

Lightweight Autoclavable Wide-Angle Contact Lens for Vitreous Surgery

“…2 Steam autoclaving can be used for sterilization, but fogging is a limitation in obtaining a clear view of the fundus. 3,4 We describe an improvised perforated lightweight autoclavable wide-angle contact lens that avoids fogging.…”