Phthisis bulbi is atrophy and degeneration of a blind eye.

phthisis bulbi, a condition in which the fluid level in the eye reaches a dangerously low level, such that the integrity of the eye is compromised

An antiphthisic is an agent which relieves or cures phthisis - an atrophy of the body, particularly pulmonary tuberculosis.

Christopher Packe has written:

'An explanation of that part of Dr. Boerhaave's aphorisms, which treats of the phthisis pulmonalis'

Phthisis (or pulmonary tuberculosis) is a type of lung disease caused by the bacterium Mycobacterium tuberculosis. It is characterized by symptoms such as chronic cough, weight loss, fatigue, and night sweats. Without proper treatment, phthisis can lead to severe damage to the lungs and other organs.