Indian Journal of Ophthalmology

: 1971  |  Volume : 19  |  Issue : 1  |  Page : 42-

Congenital iridodialysis

CM Sarma 
 Department of Ophthalmology Government Hospital, Masulipatam (A.P), India

Correspondence Address:
C M Sarma
Department of Ophthalmology Government Hospital, Masulipatam (A.P)

How to cite this article:
Sarma C M. Congenital iridodialysis.Indian J Ophthalmol 1971;19:42-42

How to cite this URL:
Sarma C M. Congenital iridodialysis. Indian J Ophthalmol [serial online] 1971 [cited 2024 Feb 28 ];19:42-42
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Full Text

Presence of a small hole or holes, at the root of the iris, from the time of birth is known as con�genital Iridodialysis or Irisdiasta�sis. Often, the appearance is ex�actly like a traumatic dialysis. (Mann[1]).

 Case Report

P. R., 10 years, Hindu, male at�tended the Ophthalmic O.P.D. on 28-7-1969 for a certificate regard�ing his visual acuity.

In the left eye, three round holes, about I mm. in size. were present, at the root of the iris, at 6 O'clock, 4 O'clock, and 3 O'clock positions. The pupil was round and was reacting to light and accom�modation. The holes did not show any reaction to light. Vision, fundus and tension were normal. Right eye was normal in all res�pects.


A diagnosis of congenital Irido�dialysis was made because of ab�sence of history of trauma to the left eye, and because of absence, of damage to the other structures of the eye. Intra uterine or intra�partum trauma could cause con�genital Iridodialysis.

There is defective development or undue atrophy of the iris meso�derm, coupled with improper an�position of the ectoderm or its splitting later in the foetal life due to lack of support of the meso�derm. As long as this defect re�mains small, it leaves the pupil�lary margin intact. The margin of the hole is smooth. There is absence of sphincter muscle of pigmentary epithelial lining. The hole may be crossed by band of tissue, connecting the margin to the root of the iris. Associated other congenital defects may also be present.


A case of congenital Iridodialy�sis is reported and the genesis of congenital Iridodialysis discussed[3].


1DUKE ELDER S.: Text Book of Oph�thalmology-Vol. II-Henry Kimpton-London - 1937.
2MANN I.: Developmental Abnormali�ties of the eye-Cambridge University press - London - 1937.
3MISHRA S. M.: Congenital Iribodialysis - Proceedings of the All India Ophthalmological Society - Vol. XXIII - 1966.