Normal tension glaucoma about four times as high as the prevalence of the "classical glaucoma" with an IOP of 22 mm Hg and higher. The pillar of the current understanding of normal tension glaucoma is a reduced IOP tolerance of the retinal ganglion cells and the cells in the optic nerve head - an IOP of, for example, 17 or 19 mm Hg that would not affect a healthy eye leads to damage in the eye of an NTG patient. In many patients, normal tension glaucoma is common in individuals with a generalized reduced perfusion of organs and certain body tissues. A low
Henneke horse body condition scoring system a body condition score of 5 or 6. Stallions have a high energy output during breeding season so some advise a stallion begin the breeding season at a 6 or 7 to keep him within the healthy range at the end of the breeding season. If a stallion has a body condition score less than 3 or greater than 8, reproductive performance is compromised. There has not been much research on the connection between body condition score and performance ability in horses so optimum scores are unknown. However, horses with a low body condition score lack the fat reserves for