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Anterior Segment Grand Rounds

Case 9a&b

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[9a]

Chief complaint
An 83-year-old female presented with gradually decreasing vision in OD since cataract surgery; positive history of falling and hitting head 3 weeks earlier.

History
Past ocular history: S/P pseudophakia OD 2 months, 1 week S/P 20/30 with chronic moderate severe dry eye OS 1998 with CME? and dry eye and decreased vision of 20/60, epithelial basement membrane dystrophy (EBMD), blepharitis, chronic open angle glaucoma (Xalatan and Alphagan P).
Past medical history: Diabetes for 15 years; hypertension, arthritis, Parkinson's disease.

Exam
Best corrected visual acuity: 20/40 OD, 20/70 OS
External: 1+ diffuse injection OU
Slit lamp:
2+ inferior keratitis OU, EBMD OU, anterior chamber clear, IOL OD
IOL decentration (with dilation): Had dislocated superiorly and nasally. If don't dilate, may not see dislocation.

[view video]

IOPs (applanation tonometry): 19mmHg OD, 23mmHg OS
Dilated fundus exam (DFE): no obvious macular edema in OD; cup-to-disk ratio 0.7 OU

Assessment:

Decentered IOL secondary to trauma versus capsular fibrosis syndrome OD.

Plan/Treatment

Refer back to surgeon for repositioning of subluxated IOL.

Follow-up:

  • S/P IOL exchange, IOL in sulcus
  • Temporarily discontinue Xalatan OD
  • Best corrected visual acuity: 20/50 OD
  • IOPs (applanation tonometry): 23mmHg OD, 20mmHg OS
  • Placed on Restasis bid OU for dry eye treatment
2-month follow-up: Doing well; improved corneal signs; less staining.


[9b]

Chief complaint
A 78-year-old female presented with starbursts along with halos and monocular diplopia OD 3 weeks after cataract surgery.

History
Past ocular history: 1 week S/P 20/25.
Past medical history: Unremarkable.

Exam
Best corrected visual acuity: 20/60 OD, 20/20 OS
Slit lamp:
IOL decentration OD
IOL decentration: Occurred 2-3 weeks after surgery; might not occur until later after surgery.

[view video]

IOPs (applanation tonometry): 22mmHg OD, 20mmHg OS
Dilated fundus exam (DFE): flat macula

Assessment:

Dislocated IOL with monocular diplopia and decreased vision OD.

Plan/Treatment

Referral to surgeon for IOL repositioning.


IOL Decentration
  • Reported rates of decentration vary from 7 to 40 percent
  • Most obvious symptoms
    • Decreased vision
    • Glare
    • Ghost images
    • Monocular diplopia
  • Etiology
    • Lens unable to withstand the pressure exerted after capsular bag shrinkage
    • Hydrophobicity of lens prevents adherence to capsular bag
    • Softness and flexibility of lens causes lens deformation
  • Capsular capture

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URL: http://www.opt.indiana.edu/ce/antseg/case9.htm
Revised: November 20, 2004
IU Optometry home page: http://www.opt.indiana.edu/
Comments (content): Dr. Vic Malinovsky at malinovs@indiana.edu
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Copyright © 2004, The Trustees of Indiana University