|Year : 1971 | Volume
| Issue : 1 | Page : 42
Department of Ophthalmology Government Hospital, Masulipatam (A.P), India
C M Sarma
Department of Ophthalmology Government Hospital, Masulipatam (A.P)
Source of Support: None, Conflict of Interest: None
|How to cite this article:|
Sarma C M. Congenital iridodialysis. Indian J Ophthalmol 1971;19:42
Presence of a small hole or holes, at the root of the iris, from the time of birth is known as congenital Iridodialysis or Irisdiastasis. Often, the appearance is exactly like a traumatic dialysis. (Mann).
| Case Report|| |
P. R., 10 years, Hindu, male attended the Ophthalmic O.P.D. on 28-7-1969 for a certificate regarding 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 accommodation. The holes did not show any reaction to light. Vision, fundus and tension were normal. Right eye was normal in all respects.
| Discussion|| |
A diagnosis of congenital Iridodialysis was made because of absence of history of trauma to the left eye, and because of absence, of damage to the other structures of the eye. Intra uterine or intrapartum trauma could cause congenital Iridodialysis.
There is defective development or undue atrophy of the iris mesoderm, coupled with improper anposition of the ectoderm or its splitting later in the foetal life due to lack of support of the mesoderm. As long as this defect remains small, it leaves the pupillary 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.
| Summary|| |
A case of congenital Iridodialysis is reported and the genesis of congenital Iridodialysis discussed.
| References|| |
DUKE ELDER S.: Text Book of Ophthalmology-Vol. II-Henry Kimpton-London - 1937.
MANN I.: Developmental Abnormalities of the eye-Cambridge University press - London - 1937.
MISHRA S. M.: Congenital Iribodialysis - Proceedings of the All India Ophthalmological Society - Vol. XXIII - 1966.