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Year : 2019  |  Volume : 67  |  Issue : 1  |  Page : 137

“Triangle sign” in Morgagnian cataract

Department of Cataract and Refractive Surgery, Sri Sankaradeva Nethralaya, Guwahati, Assam, India

Date of Web Publication21-Dec-2018

Correspondence Address:
Dr. Saurabh Deshmukh
Sri Sankaradeva Nethralaya, 96, Basistha Road, Beltola, Guwahati - 781 028, Assam
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijo.IJO_940_18

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How to cite this article:
Deshmukh S, Bhattacharjee H, Gupta K. “Triangle sign” in Morgagnian cataract. Indian J Ophthalmol 2019;67:137

How to cite this URL:
Deshmukh S, Bhattacharjee H, Gupta K. “Triangle sign” in Morgagnian cataract. Indian J Ophthalmol [serial online] 2019 [cited 2022 Oct 5];67:137. Available from: https://www.ijo.in/text.asp?2019/67/1/137/248180

Morgagnian cataract (MC), named after the Italian anatomist anatomist, Giovanni B. Morgagni, is a cataract in which there is liquefaction of the cortex and sinking of the dense nucleus in the capsular bag.[1],[2] In some cases, liquified cortical matter gets completely resorbed leaving behind just the transparent lens capsule superiorly and the dense nucleus in the bag inferiorly. This may be confused with inferiorly subluxated cataractous lens due to superior zonular dialysis. A 65-year-old female presented with diminution of vision in the right eye for 6 months. Slit lamp examination showed clear zone superiorly and a nucleus inferiorly [Figure 1]a. On 10× magnification, a triangular space was observed just above the nucleus [Figure 1]b. Thus, a diagnosis of MC with resorbed cortex was made on the basis of “Triangle sign.” She underwent successful phacoemulsification with in the bag intraocular lens implantation. This image highlights the importance of “Triangle sign” in differentiating MC from inferiorly subluxated lens and deciding further course of surgical management.
Figure 1: (a) Slit lamp optical section showing morgagnian cataract with resorbed cortex and sunken dense nucleus. “Triangle sign” (Triangular space) seen just superior to the nucleus. (b) Magnified image (10×) of the “Triangle sign” (arrow)

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We would like to thank Sri Kanchi Sankara Health and Educational Foundation, Guwahati, India.

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.

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Conflicts of interest

There are no conflicts of interest.

  References Top

Morgagnian; 2018. Available from: https://www.medical-dictionary.thefreedictionary.com/morgagnian. [Last accessed on 2018 Jun 04].  Back to cited text no. 1
Bron AJ, Habgood JO. Morgagnian cataract. Trans Ophthalmol Soc U K 1976;96:265-77.  Back to cited text no. 2


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