Experience of keratoconus treatment with the use of Alloplant transplantation technology
Methods: DAB was used in 91 cases for the treatment of patients with keratoconus. Before the operation and at discharge the patients underwent the following examinations: visual acuity, autorefractometry and evaluation of the sensibility and functional mobility of the visual system. The same measurements were performed for reoperations. Results: Processing of the obtained data with the use of the parametric and non-parametric statistics showed that the results of DAB insertion depend on the stage of keratoconus. During the first stage there takes place only stabilization of visual acuity and its correction. The same happens during the third and fourth stages with worse morphologic functional state of vision. Reliable and considerable increase of visual acuity and its correction was observed only for the second stage of keratoconus. Conclusion: The efficiency of keratoconus treatment with the use of Alloplant transplantation technology has selective character - it depends on the disease stage. Evidently, both functional reserves of the central parts of the visual system and some «thin» differences of structure and cornea optical properties, not detected by refractometry, play a significant role in this selectivity.