Re: Two month old puppy

Richard Fox — Tue, 07 Jun 2011 08:59:08 GMT

True those "threads" could be vessels in the cornea and not the anterior chamber? As they look a bit reddish? Corneal trauma/post ulcer?

Re: Two month old puppy

Ian Battersby — Mon, 06 Jun 2011 13:22:50 GMT

I got our opthalamologists to have a look ( i am a medic).

They felt a persistent pupillary membrane was unlikely.

Due to the corneal vasculature that has developed to the lesion. They were concerned this may represent a response to inflammation most likely to a previous trauma.

Ian

Re: Two month old puppy

Richard Fox — Sun, 05 Jun 2011 14:19:19 GMT

I agree with Claire - from this angle it does look like a PPM - with also some opacification of the cornea. I wonder due to the extent that I might go as far as to suggest it is Peter's anomaly (corneal leukoma):

[quote]

A Case of Peters» Anomaly in a Springer Spaniel

H. L. Swanson, R. R. Dubielzig, E. Bentley and C. J. Murphy

Abstract

An 8-week-old springer spaniel presented with a large central corneal opacity of the left globe, which was accompanied by cords of tissue spanning from the iris collarette to the posterior cornea. A posterior cortical cataract was noted in the right eye. At the owner's request the puppy was humanely destroyed, and a necropsy was performed. Upon sectioning the left globe in the vertical plane, a circle of pigmented strands of tissue was observed spanning the anterior chamber from the iris to the posterior aspect of the cornea. The right globe appeared normal when inspected grossly. Histologically, a membrane of pigmented tissue covered the posterior aspect of the broad central corneal leukoma of the left globe. This membrane and the cords traversing the anterior chamber were composed of vascular uveal tissue. Descemet's membrane and the corneal endothelium were reduced or absent in the zone of corneal opacity. Other than the changes associated with cataract, the right globe was histologically normal. The clinical and histological findings in the left globe were identical with those described for Peters» anomaly in human beings.

[/quote]

Re: Two month old puppy

Claire Edgington — Fri, 03 Jun 2011 15:46:17 GMT

This looks like persistent pupillary membrane. I'm no ophthalmologist though so please correct me if I'm wrong!