Which of the following is an eye disease ?

Options

A. hepatitis
B. measles
C. glaucoma
D. bronchitis

Explanation

To determine which of the following is an eye disease, we will analyze each option provided:

1. **Hepatitis**:
- Hepatitis is an inflammation of the liver. It can be caused by viral infections, toxic substances, or autoimmune diseases. Since it affects the liver and not the eyes, this option is incorrect.

2. **Measles**:
- Measles, also known as rubeola, is an acute infectious viral disease primarily affecting children. It is caused by the measles virus, which is a member of the paramyxovirus family. Measles affects the respiratory system and can cause skin rashes, but it is not classified as an eye disease. Therefore, this option is also incorrect.

3. **Glaucoma**:
- Glaucoma is a group of eye conditions that damage the optic nerve, often due to abnormally high pressure in the eye. It can lead to vision loss if not treated. There are two main types: acute and chronic glaucoma. Acute glaucoma involves a sudden increase in eye pressure, while chronic glaucoma develops gradually. Since glaucoma directly affects the eyes, this option is correct.

4. **Bronchitis**:
- Bronchitis is the inflammation of the bronchial tubes in the lungs, leading to coughing and difficulty breathing. It is a respiratory condition and does not pertain to eye diseases. Thus, this option is incorrect.

Based on the analysis, the correct answer is **Glaucoma**.

### Summary:
- The correct answer is **Glaucoma** (Option C), as it is the only condition listed that is classified as an eye disease.