597 Blinkered Vision
BLINKERED VISION
by David Hancock
I once heard of a blind Whippet which went hunting daily, despite its disability; I admired its owner for giving it such spiritual outlet and release from perpetual handicap. We should treasure sound eyesight in our dogs both through breeding programmes, to reduce the incidence of inherited eye conditions, and by monitoring the sad restrictions on sight imposed by faddish breeders. No dog enjoys wearing blinkers!
One owner of a dog exhibited at Crufts, with hair covering its eyes completely, assured me, firstly, that this breed had managed with such a liability for a hundred years so what was the problem, and, secondly, his breed had to look like that in order to qualify for Crufts! The first reason is untrue; breeds have got hairier and hairier as the closed gene pool magnified the feature. The second reason is a sad reflection on the show scene; any human whim which, when exercised, discomforts dogs, needs to be countered.
The much-feared European Convention for the Protection of Pet Animals (ETS 125) aims, rightly or wrongly, to counter those elements of pedigree dog-breeding which affect the welfare of the dog. It expresses concern over the 'abnormal size and form of eyes and eyelids' and seeks reconsideration of breed standards' where the wording could lead to discomfort for a dog. There is, perhaps understandably, strong opposition to this convention in Britain. This could eventually lead to a heated discussion on what matters more, breed type or the morality of breeding discomforted creatures. In the times we live in, I believe that the arguments over the latter will win. The wording of breed standards here on eyes, i.e. what they should look like in a breed, are questionable. It would be sensible if our canine hierarchy gave this closer scrutiny.
It could be argued that the group of dogs above all others which need sound eyes is the sighthound group, if only by name. But if you examine the wording of the various sighthound breed standards, there are clearly amendments needed. The Afghan Hound eyes have to be 'nearly triangular' without the shape of triangle being specified; that is not helpful to a tyro-breeder. The punctilious could well argue that 'nearly triangular' is a contradiction in terms; a triangle cannot be 'nearly' anything else. Who decides how flat or upright the nearly triangular eye of the Afghan Hound has to be? Of what value is such a loose term? The Saluki and the Sloughi have to have 'large' eyes, but how large? The Greyhound and the Borzoi are expected to feature eyes which are 'obliquely set', i.e. diverging from a straight line, but by how much? Imprecise wording in a word-picture intended to be instructive is dangerous.
In the scenthound breeds, the Basset Hound has to have 'lozenge-shaped eyes', but lozenges come in all sorts of rhomboid form; is this informative? The Petit Basset Grand Vendeen is expected to feature large eyes, like the Saluki and the Sloughi, but in a totally differently-shaped skull. The size is surely dependent on the local surface area. The Bracco Italiano should have eyes which are not too deep-set, but exhibits win, as the World Shows reveal, with distinctly sunken eyes. What is the value of the breed standard? The Bull Terrier has to have eyes which are both 'well sunken' and 'triangular'. Thankfully I have never seen a specimen of this breed with its eyes 'well sunken'; why does any breed need triangular eyes when the eye socket is circular?
The Bloodhound must not have sunken eyes but if you tour the Bloodhound benches at Crufts, you can see any number of them. How did they qualify? By not obeying their own breed standard? The Bloodhounds of the packs do not display this feature. The Clumber Spaniel is actually allowed to display haw 'but without excess'. Will it take the European Convention to establish the degree of excess permitted? Haw, or loose eyelids, is just what a hard-working gundog does NOT need, but it is permitted in the Sussex Spaniel, and the Basset Hound, too. No working dog can obtain anything other than discomfort from loose eyelids; why permit it in an officially-sanctioned breed standard? It gives those who wish to dictate to dog-breeders all the ammunition they need.
The eyes of any living creature are an essential element in its quality of life, why not enhance its sight therefore and enhance that quality? How long would a dog last in the wild if its forward vision is limited? Nature is crueller than any misguided dog-breeder or breed fancier.
If you find joy in watching a setter scan the foreground or a Pointer focussing on air-scent floating its way, before 'freezing' instinctively, you appreciate fully the close link between sight and scent in sporting breeds. These two particular senses have been highly developed in such breeds by man for centuries. Both senses mean more to dogs than to us; that alone is reason enough to prize them and strive to protect them. It is believed that dogs have 20/75 vision, meaning that they are able to see clearly an object from 20 feet away that a human with normal vision would see at 75 feet away. Cats have roughly 20/100 vision and horses 20/33, closer to ours. But dogs have vastly superior night vision and detection of movement. They thrived as predators because of their combined better-developed senses of sight, hearing and smell. The low-light vision of dogs is greatly superior to ours too, facilitating hunting at night.
Dogs are more aware of events around them than human beings. Their eyes are set on their heads at a 20 degree angle, whereas we have our eyes set looking straight ahead. Dogs have a much wider field of view than we do, around 250 degrees against our 180 degrees. Perception of depth depends on binocular vision, which is the visual area where the two eyes overlap. The greater the binocular field, then the greater the depth of perception in a species. We excel in depth perception, with a visual overlap of around 140 degrees; dogs have a visual overlap of around 80 degrees only. They need all the help they can get in depth perception. By limiting further their binocular vision we increase their burden more than we realise. This additional limitation is one dogs could do without.
Yet, in terrier breeds like the Soft-coated Wheaten, Sealyham and Kerry Blue, we appear to be doing our utmost to limit their forward vision with scant regard for the welfare of the dogs. We cannot knowingly do that and then complain about interference from Brussels, on the grounds that these breeds are safest in our hands. If you 'fancy' a breed, surely you do so out of affection, not exploitation. Nature provides living creatures with the senses needed to survive, what right has man to impede these basic senses? By what mandate do breed fanciers inflict limitations on their breed's sight? Certainly not out of a truthful regard for breed history, impeded sight is a recent innovation in dogs.
In his masterly The Conformation of the Dog (Popular Dogs, 1957), the veterinary surgeon and breeder RH Smythe wrote: "Dogs such as the Kerry Blue with a huge bunch of hair descending from the forehead between the eyes will have the greatest difficulty in seeing at any time with two eyes at once any object situated in front of them. It is amazing how such dogs as Old English Sheepdogs and some foreign breeds such as the Tibetan Terrier with masses of hair bushed out all over the face manage to see at all!" Half a century later, the situation if anything has got worse; when is action going to be taken by those with responsibilities for breeds of dog in Britain? Is it at all surprising that an outside body has thought it timely to act in the protection of dogs?
In his equally valuable Judging Dogs (Gifford, 1972), Smythe makes these observations: "The colour of the eye or of the eye rims, has no effect on vision so one may wonder whether those who first drew up the Standards thought that a dark eye was superior in vision to a light eye, or if, after all, the whole subject of the standard was to make each breed in its own way, pretty." If his final comment is correct, so much for breeders having the best interests of their particular breed at heart. In a further observation he points out that "The respective Standards make no reference to the fact that certain breeds have flat faces, frontal eye placement and binocular vision while others have long heads with prominent muzzles separating the two eyes, each of which has its own separate field of vision. Probably the reason is that there is apparently no cooperation or means of communication between the people who drew up the Standards in differing breeds."
That last comment is a direct reflection on our Kennel Club, who have taken upon themselves the full and final responsibility for breed standards. Eyes are a key part of not just a dog's basic senses but of its anatomy too. The construction of the dog affects the way it uses its eyes, the neck and the skull especially. If you accept responsibility for the word picture of a breed, then you can in so many ways decide the fate of that breed. If the word picture allows the dog of a breed to become handicapped then surely the body responsible for that word picture has a case to answer. If it is not a declared fault for a dog's eyesight to be impaired by its coat or its eye design then it is a fair question to ask, why not? If for over a century, a body which has based its whole raison d'etre on the improvement of dogs, has merely watched actual deterioration, step forward the Eurocrats! At last, a proper job for the jobsworths.