Advances
in the treatment of lens luxation have also been more routinely offered
over the past few years. In particular the use of “key hole” surgery to
remove subluxated and luxated lenses is becoming our preferred approach
and the use of prosthetic lens implants following lens removal is also
now offered routinely.
The
ability to replace the abnormal lens with a prosthetic intra-ocular
lens (left top; sutured IOL, left bottom; suture IOL in place following
lens removal) offers these patients an alternative to the visual
disability seen following lens removal without prosthetic lens
implantation. The combination of prosthetic lens implantation and
endoscopic laser glaucoma surgery may prove to offer a much better long
term prognosis for these patients.
We saw many more cases of Equine Recurrent Uveitis (ERU) last year than
we previously have. Cases have been more severe and more difficult to
control. This has coincided with the availability of a new technique
for the long term medication of this frustrating condition. We have now
successfully implanted a number of intra-ocular devices designed to
deliver Cyclosporin for 3-5 years. Cyclosporin, whilst being very
effective in control of chronic uveitis does not penetrate the cornea
and for this reason has until now been ineffective in the management of
ERU. Referrals are accepted for all species, reduced referral fees are
offered for small mammals (rabbits, guinea pigs, hamsters etc.).
One
challenging exotic patient we met this year was “B**tard” the Buzzard.
Presenting with sudden onset blindness this young Buzzard was found to
have a detached retina in her left eye and an advanced cataract in her
left eye. With the assistance of Chris from the exotic referral
department and following electrical testing of her retinal function
B**tard underwent successful cataract removal and prosthetic lens
implantation. Equine, camelid and other large animal referrals are
welcomed.
The equine vision
centre is based at our Wotton under Edge clinic where full anaesthesia
and hospitalisation facilitates are available. Equine patients can be
seen by arrangement at several equine hospitals in the South West and
South Wales. Intra-ocular surgery (including cataract surgery),
advanced corneal surgical techniques, laser treatment of glaucoma, slow
release drug implantation for recurrent uveitis and ocular prosthetic
surgery are all offered at the Equine eye clinic. A large animal
ophthalmology CPD day is planned for the last Friday in Feb watch the
web site for details. Visiting eye clinics are currently held at:
Brookfield Veterinary Hospital (Hereford), Bristol University Vet
School (Langford), Axe Valley Veterinary Practice (Blackford, Wedmore,
Somerset) and Isca Veterinary Surgery (Exeter).