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OPHTHALMIC IMAGE
Year : 2022  |  Volume : 2  |  Issue : 1  |  Page : 317

A novel technique to measure intraocular lens decentration using ultrasound biomicroscopy


Dr. Rajendra Prasad Centre for Ophthalmic Sciences, AIIMS, New Delhi, India

Date of Web Publication07-Jan-2022

Correspondence Address:
Dr. Amber A Bhayana
Dr. Rajendra Prasad Centre, AIIMS, New Delhi - 110 029
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ijo.IJO_1607_21

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How to cite this article:
Khokhar SK, Bhayana AA. A novel technique to measure intraocular lens decentration using ultrasound biomicroscopy. Indian J Ophthalmol Case Rep 2022;2:317

How to cite this URL:
Khokhar SK, Bhayana AA. A novel technique to measure intraocular lens decentration using ultrasound biomicroscopy. Indian J Ophthalmol Case Rep [serial online] 2022 [cited 2022 Aug 14];2:317. Available from: https://www.ijoreports.in/text.asp?2022/2/1/317/334893



[Figure 1] shows ultrasound biomicroscopy (UBM) of a 7-year-old child operated for post–open globe injury cataract. A three-piece hydrophobic acrylic intraocular lens (IOL) was implanted in the sulcus and optic captured[1] behind anterior and posterior capsular openings. EF represents the ends of optic; BC represents its projection on the line AD, which is the line joining two diametrically opposite points of the scleral spur ring (identification is subjective and requires physician expertise). Ideally, AB and CD should be equal for a well-centered IOL. (AB − CD)/2 will give decentration of IOL toward point D. We thus describe a novel technique of calculating IOL decentration using UBM (subject to UBM availability).
Figure 1: Ultrasound biomicroscopy B-scan of pseudophakia. Optic edge is at 2.589 mm (AB-inbuilt calipers) from one end of the scleral spur, and at 2.194 mm (CD) from the diametric opposite scleral spur point. (AB - CD)/2 = 0.1975 mm gives the objective amount of intraocular lens shift in this plane toward point D

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Declaration of patient consent

The authors certify that they have obtained all appropriate patient consent forms. In the form the patient(s) has/have given his/her/their consent for his/her/their images and other clinical information to be reported in the journal. The patients understand that their names and initials will not be published and due efforts will be made to conceal their identity, but anonymity cannot be guaranteed.

Financial support and sponsorship

Nil.

Conflicts of interest

There are no conflicts of interest.



 
  References Top

1.
Gimbel HV, DeBroff BM. Intraocular lens optic capture. J Cataract Refract Surg 2004;30:200-6.  Back to cited text no. 1
    


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