Size Guide for the Optivizor

Pug

Dogs come in all different shapes and sizes and so does the Optivizor! This guide will help you to select the right model for your requirements, including choice of nose length, size, and visor options.

Before taking measurements please refer to the Nose Length Guide for classification of nose lengths by breed and determine which model of Optivizor will work best. When you have made your selection you can order your Optivizor from our online shop.

1. MEASURING SIZE

Each size of the Optivizor is colour coded for ease of reference, ranging from light green for the Tiny through to purple for the Extra Large XL. The measurement method depends on the nose length.

1a. Measuring for the Optivizor with a Short Nose Length

There are nine sizes available.

Straps
Short Nose

Measure the head circumference around the dog’s head from the middle of the ears, down under the chin and back up to the ears.

Short Nose Optivizors come with additional slots so that if required you can add additional straps (not supplied) that connect with the collar and hold the Optivizor in place.

Short Nose     Head Circumference in Centimetres (cm)
Size     28-30 30-32 32-34 35-38 39-43 44-48 49-55 56-60 60+
Tiny X4S (POP01)                  
Mini Mini X3S (POP02)                  
Mini XXS (POP03)                  
Toy XS (POP04)                  
Small S (POP05)                  
Small-Medium SM (POP06)                  
Medium M (POP07)                  
Large L (POP08)                  
Extra Large XL (POP09)                  

 

1b. Measuring for the Optivizor with a Normal Nose Length

There are seven sizes available.

Measure
Mid-Point

Locate the Mid-Point - run an imaginary line across from behind one ear all way up and across the dog’s head and across to the other ear. You will find the mid-point located at the centre of this line. This mid-point is then used to establish the starting point of the head measurement.

Measure the Length - using a straight ruler measure from the mid-point to the tip of the dog’s nose. Do not follow the contours of the dogs’s face. Measure in a straight line only. You may need to lift the ruler away from the face to get a good measurement.

Weigh your Dog - check the weight of your dog. Your vet will usually have a record of your dog’s weight. If you are using household scales for small dogs you can carry them for a first measurement, then put them down and measure your own weight, then deduct one reading from the other. The maths is easier if you use kilograms (convert stones to kg here).

Compare the tables - refer to the following two tables. The top one is for length, the bottom one is for weight. You can also see there is a slight overlap in the weight ranges. If each table indicates a different size choose the smaller of the two. It is better for the Optivizor to fit snugly on the head.

Table 1 of 2 - length

Normal Nose     Head Length in Centimetres (cm)
Size     9-12 12-15 16-18 19-21 22-24 25-27 28+
Mini XXS (PO409)              
Toy XS (PO410)              
Small S (PO411)              
Small-Medium SM (PO412)              
Medium M (PO413)              
Large L (PO414)              
Extra Large XL (PO415)              

Table 2 of 2 - weight

Normal Nose     Weight in Kilograms (kg)
Size     <2 2-6 5-12 10-25 23-35 33-45 46+
Mini XXS (PO409)              
Toy XS (PO410)              
Small S (PO411)              
Small-Medium SM (PO412)              
Medium M (PO413)              
Large L (PO414)              
Extra Large XL (PO415)              

 

1c. Measuring for the Optivizor with a Long Nose Length

There are four sizes available.

Measure
Mid-Point

Locate the Mid-Point - run an imaginary line across from behind one ear all way up and across the dog’s head and across to the other ear. You will find the mid-point located at the centre of this line. This mid-point is then used to establish the starting point of the head measurement.

Measure the Length - using a straight ruler measure from the mid-point to the tip of the dog’s nose. Do not follow the contours of the dogs’s face. Measure in a straight line only. You may need to lift the ruler away from the face to get a good measurement.

Long Nose     Head Length (cm)
Size     12-15 15-17 17-20 20-23
Toy XS (POWG0)        
Small S (POWG1)        
Small-Medium SM (POWG2)        
Medium M (POWG3)        

 

2. VISOR OPTIONS

The Optivizor can provide physical protection for the face as well as UV protection for the eyes.

Optivizors are available in two styles: clear or tinted. Some tinted models come with a UV mesh.

Tinted

All nose lengths of the Optivizor are available with a clear plastic visor. This model is suitable if you do not need the additonal UV protection, perhaps because your dog stays indoors all the time, has lost the sight from both eyes, or is a working dog in rescue or security work where shielding is required for safety and visual performance is important.

All nose lengths of the Optivizor are available with a tinted plastic visor. This gives a basic level of UV protection which is helpful for dogs that are photosensitive, and general eye health.

With the combination of the tinted visor plastic and the UV mesh you can give a maximum level of UV protection which is helpful for dogs that are photosensitive, and those with degenerative eye conditions such as pannus (also known as chronic superficial keratitis (CSK), or Uberreiter’s disease). The UV mesh is recommended for breeds susceptible to pannus including German Shepherds, Belgian Tervurens, Greyhounds, Siberian Huskies, Australian Shepherds, and Border Collies.

Mesh View
Accessory

The Normal and Long Nose Optivisors are available with a tinted visor and the UV mesh accessory. The UV mesh is not sold separately and requires additional fixings which are only supplied on the tinted versions. It is not available for the Short Nose Optivizor. Your dog can still see through the tinted mesh without any problem.

https://www.bustercollars.com/sizes/optivizor.php
Last updated: Monday, 15th December 2014
Stock Levels updated: Tuesday, 25th April 2017

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