[Sonographic diagnosis (B-mode technique) for the eyes in horses. 1. Methods and normal findings].

The research article discusses the use of B-mode sonographic diagnosis, a type of ultrasound technology, to examine and measure various parts of the healthy horse eye. The researchers establish baseline measurements that can be helpful in treating and observing changes or diseases in this particular organ of horses.

Methodology

• The researchers used the Philips Diagnost R 1200 ultrasound system in combination with a 5 MHz linear transducer to conduct their study.
• Through this equipment, they were able to visualize and measure different parts of the horse eye, both altered and unaltered, including the cornea, ciliary body, iris, lens, vitreous body, wall of the posterior globe (retina, choroid, sclera) and retrobulbar structures (optical nerve, retrobulbar muscles, orbital fat pad, bony orbita).

Significance of Echographical Examination

• The echographical examination of the eye provides crucial information about the internal structures of the horse eye.
• This method is particularly valuable in instances where a typical visual examination of the eye is impossible due to opacity of the optical system or after artificial eyelid closure.
• The ultrasound images provide detailed insight into the possible underlying problems or diseases affecting the eyes of horses.

Biometric Measurements and Standard Values

• The researchers conducted biometric measurements along the optical axes in 30 healthy horse eyes to establish the so-called standard values.
• These standard values are fundamental for veterinary ophthalmologists who typically examine affected or altered horse eyes. They use these standard measurements as a reference to identify abnormalities or changes due to disease or therapeutic intervention.
• By comparing the measurements of the affected eyes to these standard values, practitioners can objectively evaluate the progression of the disease or the effectiveness of a treatment strategy.