Home About us Editorial board Ahead of print Current issue Search Archives Submit article Instructions Subscribe Contacts Login 
  • Users Online: 630
  • Home
  • Print this page
  • Email this page


 
   Table of Contents      
BRIEF COMMUNICATION
Year : 2013  |  Volume : 61  |  Issue : 1  |  Page : 30-32

Histopathologically proven siderotic cataract with disintegrated intralenticular foreign body


1 Department of Ophthalmology, Tan Tock Seng Hospital, Jalan Tan Tock Seng, Singapore
2 Department of Pathology, Tan Tock Seng Hospital, Jalan Tan Tock Seng, Singapore

Date of Submission10-May-2012
Date of Acceptance06-Jun-2012
Date of Web Publication26-Dec-2012

Correspondence Address:
Rupesh Agrawal
Department of Ophthalmology, Tan Tock Seng Hospital
Singapore
Login to access the Email id

Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0301-4738.105051

Rights and Permissions
  Abstract 

Cataract formation may be an indicator of early siderosis and has been associated with intralenticular foreign bodies. We report a unique case of histopathologically proven lens siderosis in a young man with a preceding history of trauma but no signs of retained intraocular foreign body. He presented with a total white cataract with brownish deposits on anterior capsule and underwent cataract surgery for same followed by histopathological staining of anterior capsule for iron deposits. This case illustrates the importance of close monitoring of patients with history of trauma or previous penetrating injury to the eye, albeit no intraocular foreign body, as they might develop ocular siderosis at a later stage.

Keywords: Ocular siderosis, siderotic cataract, traumatic cataract


How to cite this article:
Siantar RG, Agrawal R, Heng LW, Ho BC. Histopathologically proven siderotic cataract with disintegrated intralenticular foreign body. Indian J Ophthalmol 2013;61:30-2

How to cite this URL:
Siantar RG, Agrawal R, Heng LW, Ho BC. Histopathologically proven siderotic cataract with disintegrated intralenticular foreign body. Indian J Ophthalmol [serial online] 2013 [cited 2017 Sep 20];61:30-2. Available from: http://www.ijo.in/text.asp?2013/61/1/30/105051

Ocular siderosis is a clinical condition characterized by deposition of iron molecules in ocular tissue usually caused by retention of an iron-containing intraocular foreign body. Clinical findings include iris heterochromia, pupillary mydriasis, iron deposition on corneal endothelium and anterior lens capsule, cataract formation and retinal pigmentary changes. [1] Patients usually present with a history of ocular trauma, although some may remain asymptomatic and present only later when there is a drop in visual acuity. [2],[3] About 8-10% of all intraocular foreign bodies account for intralenticular foreign bodies and more often than not patients seek medical care for decrease in vision due to cataract. [1] We report a unique case of histopathologically proven lens siderosis in a young man with a preceding history of trauma but no signs of retained intraocular foreign body.


  Case Report Top


A 32-year-old Indian man presented to the emergency department with 3 days' history of left eye pain, redness and blurring of vision. He has no past medical history, but gave a preceding uncertain history of foreign body hitting his left eye 6 months ago whilst standing beside a co-worker who was hammering metal. He was given eyedrops by a company doctor and did not seek further treatment even though he continued to have blurring of vision for 3-4 months subsequently.

On examination, his visual acuity was 6/6 in the right eye and hand movement in the left eye. There was no relative afferent pupillary defect and intraocular pressures were normal bilaterally. Examination of the right eye was normal; however, in the left eye, there was a linear cornea scar superiorly and a siderotic white cataract with small breach in the anterior lens capsule. There were brownish orange pigment clumps on the anterior lens capsule suggestive of siderotic cataract clinically [Figure 1]. There were clumps of white lens matter inferiorly in the anterior chamber but the anterior chamber was otherwise deep and quiet with no signs of a hypopyon. No intraocular foreign body was visualized via slit-lamp examination and gonioscopy. Ultrasound B-scan showed moderately dense mobile vitreous opacities with posterior vitreous detachment, with no retinal tear or detachment. On low gain, no intralenticular foreign body was seen and the posterior capsule was intact [Figure 2]. Orbital X-ray [Figure 3] and computed tomography scan [Figure 4] did not show any retained intraocular foreign body.
Figure 1: Anterior segment photo of the left eye showing brownish deposits on the lens and a white cataract

Click here to view
Figure 2: Ultrasound B-scan of the posterior segment in low gain settings. Posterior capsule is intact and there is no foreign body seen intraocularly

Click here to view
Figure 3: X-Ray of orbits showing no radio-opaque foreign body in Water's view (a), and in lateral view (b)

Click here to view
Figure 4: Computed tomography scan showing normal intact globe with no intraocular foreign body in right eye. However, it shows presence of opacified lens

Click here to view


Electroretinography examination was deferred at this stage and was decided to remove cataract and implant intraocular lens with intraoperative fundus examination for siderotic changes on the retina. After 1 week of treatment with eyedrops to reduce the anterior chamber inflammation, he underwent an uneventful left cataract aspiration and implantation of posterior chamber intraocular lens under regional anesthesia. Fundus examination was performed intraoperatively and it did not show any retained intraocular foreign body, retinal detachment, retinal tear or vitreous hemorrhage. As there were no siderotic changes on the retina, electrophysiologic examination was not performed in postoperative period as well. Anterior lens capsule was sent for histology, which showed hemosiderin deposits [Figure 5]. Special stain like Prussian blue was also used to confirm the presence of iron pigments in the anterior capsule. His final visual acuity was 6/7.5 with intraocular lens in situ and stable retina.
Figure 5: Histology of anterior lens capsule showing acellular membranous tissue with few residual corneal epithelial cells and some hemosiderin-laden macrophages (H and E stain, ×40)

Click here to view



  Discussion Top


Iron is a frequent component of metallic intraocular foreign bodies and may lead to ocular siderosis, which commonly presents as reduced visual acuity. Cataract formation may be an indicator of early siderosis and has been associated with intralenticular foreign bodies. [2],[3],[4]

There has been previous report of lens siderosis due to intraocular foreign body missed on imaging such as computed tomography and ultrasonography but later detected perioperatively. [2]

In this case however, there was no intraocular or intralenticular foreign body detected clinically or on imaging, but the patient still developed lens siderosis. As optic nerve and retina were healthy, there was no associated afferent papillary defect. We cannot rule out the possibility of a dislodged or resorbed intraocular foreign body. There may have been a lodged intralenticular foreign body immediately after trauma which got resorbed over time. Nevertheless, this case illustrates the importance of close monitoring of patients with history of trauma or previous penetrating injury to the eye, albeit no intraocular foreign body, as they might develop ocular siderosis at a later stage. In view of sight-threatening complications of siderosis, prompt intervention is indicated to preserve visual acuity and prevent progression of siderosis to involve the posterior segment. [1]

 
  References Top

1.
Hope-Ross M, Mahon GJ, Johnston PB. Ocular siderosis. Eye (Lond) 1993;7:419-25.  Back to cited text no. 1
[PUBMED]    
2.
Wu TT, Kung YH, Sheu SJ, Yang CA. Lens siderosis resulting from a tiny missed intralenticular foreign body. J Chin Med Assoc 2009;72:42-4.  Back to cited text no. 2
[PUBMED]    
3.
O'Duffy D, Salmon J. Siderosis bulbi resulting from an intralenticular foreign body. Am J Ophthalmol 1999;127:218-9.  Back to cited text no. 3
    
4.
Lee W, Park SY, Park TK, Kim HK, Ohn YH. Mature cataract and lens-induced glaucoma associated with an asymptomatic intralenticular foreign body. J Cataract Refract Surg 2007;33:550-2.  Back to cited text no. 4
[PUBMED]    


    Figures

  [Figure 1], [Figure 2], [Figure 3], [Figure 4], [Figure 5]



 

Top
 
 
  Search
 
    Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
    Access Statistics
    Email Alert *
    Add to My List *
* Registration required (free)  

 
  In this article
Abstract
Case Report
Discussion
References
Article Figures

 Article Access Statistics
    Viewed2800    
    Printed18    
    Emailed2    
    PDF Downloaded114    
    Comments [Add]    

Recommend this journal