Spontaneous capsular rupture and dislocation of the lens nucleus into the anterior chamber in Morgagnian cataract: A case report.

Authors

Yoshitaka Orio, Yoshinari Saima, Yugo Hiranuma, Hidenobu Asami, Yoshiaki Tanaka, Akihiro Kakehashi, Toshikatsu Kaburaki, Suguru Nakagawa

Published in

Medicine. Volume 105. Issue 24. Pages e49228. Jun 12, 2026.

Abstract

Morgagnian cataracts represent a hypermature stage of cataract formation characterized by cortical liquefaction and a sunken nucleus. Spontaneous rupture of the lens capsule is extremely rare but can result in dislocation of the lens nucleus into the anterior chamber.
A 75-year-old woman presented with mild ocular pain and decreased vision in her left eye for 1 week. She had undergone pars plana vitrectomy for retinal detachment approximately 35 years earlier.
Slit-lamp biomicroscopy revealed a dense brown lens nucleus dislocated into the anterior chamber with evidence of spontaneous capsular rupture. B-scan ultrasonography showed no retinal detachment.
Lens nucleus extraction combined with pars plana vitrectomy was performed without intraocular lens implantation. The lens nucleus, located in the anterior vitreous cavity at the beginning of surgery, was elevated onto the iris surface using a light guide and a Sinskey hook and subsequently removed through a superior corneoscleral incision.
Postoperatively, the eye remained quiet with stable intraocular pressure, although visual recovery was limited (0.04) because of preexisting chorioretinal atrophy.
This case highlights a rare occurrence of spontaneous capsular rupture and dislocation of the lens nucleus in a Morgagnian cataract following vitrectomy. Long-term zonular and capsular weakening after vitrectomy may predispose to delayed rupture. Early cataract surgery and regular follow-up are essential to prevent spontaneous rupture and subsequent lens-induced inflammation and glaucoma in hypermature cataracts.

PMID:
42299527
Bibliographic data and abstract were imported from PubMed on 16 Jun 2026.

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