Pectinate Ligament Abnormality (PLA)

Overview

Primary closed angle glaucoma (PCAG) / Primary angle closure glaucoma (PAGC) is associated with defective development of the drainage angle. This is termed goniodysgenesis and is also known as Pectinate Ligament Dysplasia (PLD) or Pectinate Ligament Abnormality (PLA).

Goniodysgenesis is inherited in several breeds and is tested for using a technique called gonioscopy. It is recommended that schedule A breeds are tested every 3 years.

Characteristics and Symptoms

Clinical signs include cloudiness or reddening of the eye, dilation of the pupils and vision loss.

Possible Test Results :

• Grade: 0
• Grade: 1
• Grade: 2
• Grade: 3

Pectinate Ligament Abnormality (PLA) is a mandatory test for the following breeds :

• Basset Hound
• Dandie Dinmont Terrier
• Flat Coated Retriever
• Japanese Shiba Inu
• Leonberger
• Siberian Husky
• Spanish Water Dog
• Welsh Springer Spaniel

Pectinate Ligament Abnormality (PLA) is a recommended test for the following breeds :

• American Cocker Spaniel
• Border Collie
• Chinese Crested Dog
• Cocker Spaniel
• English Springer Spaniel
• Golden Retriever
• Hungarian Vizsla