Photorefractive keratectomy with a 9.0 mm treatment zone was an efficient and relatively safe procedure for correcting hyperopia of up to 8.25 D. The predictability was good. Great care must be taken to improve the centration of the optical zone.

The liposome tear substitute shows statistically significant advantages against a balanced salt solution. This new liposome eye spray represents a new, revolutionary and effective procedure in the therapy of the "dry eye". Considering the disturbance of the lipid phase in 80 % of the patients, TEARS AGAIN ought to be a first choice treatment.

The treatment with phospholipids liposomes shows statistically significant clinical advantages and proves to be favourably and explicitly superior compared to the conventional standard treatment all in all.

No abstract

To improve the stability of refraction after photorefractive keratectomy (PRK) to correct myopia, we developed a new ablation profile with a 1.5 mm wide tapered transition zone bordering the refractive zone. The treated area's total diameter was 7 mm, the diameter of the refractive zone, 4 mm. The effect of the tapered transition zone on refraction stability was investigated in a 12-month follow-up study of six eyes of six patients. All eyes were partially sighted, with corresponding fundus changes and myopia of between -12.0 diopters (D) and -24.0 D. The therapeutic goal was to reduce myopia by 10.0 D to 13.0 D. All patients were treated unilaterally. The change in refraction in five eyes 12 months after surgery was < or = 1.0 D as compared with the first month postoperatively. In one case the change after 12 months was 2.75 D. There was less regression after PRK with the transition zone than with a conventional ablation profile (i.e., stability was improved). However, epithelial healing took longer.