Question

⚠️Take 50 point!!!!please help!!! Q: choose the best correct answer . 1. During the treatment of hyperopia with PRK, the curvature of the anterior corneal surface must A: be flattened. B: remain unchanged. C: be steepened. 2. Er:YAG lasers are not suitable for the treatment of caries because of A: cytotoxicity. B: low efficiency. C: thermal effects. 3. Angioplasty with excimer lasers is likely to induce A: atherosclerosis. B: restenosis. C: thermal injury. 4. In stapedotomy with Er:YAG lasers, the fluence should be limited to A: 1 J/cm2. B: 10 J/cm2. C: 100 J/cm2.​

Answer 1

Answer:

1. A. be flattened

2. C. thermal effect

3. A. atherosclerosis

4. C. 100 J / cm2

Explanation:

Lasik and PRK both methods are used to treat hyperopia farsightedness. The PRK treatment is mostly common in Europe. The curvature of anterior corneal surface is flattened during the surgery.

Excimer laser angioplasty is a safe technique used for patients who are suffering with atherosclerosis.

The distance of the laser tip to tooth must be kept at least 10 cm to avoid thermal damage to the teeth.