[Use of contact lenses in progressive myopia].

Effects of contact lenses on clinical refraction and vision function were examined in patients with progressive myopia. A total of 535 patients were examined; contact lens correction was employed in 385 of these, 150 ones wearing spectacles have made up the reference group; the follow-up period was up to 5 years. Refraction remained unchanged by the end of the follow-up in 73.

[Aberrometry in the diagnosis of eye diseases].

Four methods (by means of Smirnova-Korniushina's aberrometer; with the help of aberroscope--Cherning's lattice; by presenting a figure of a cross; and by automatic refractometry through different portions of the pupil) were used for studying aberration of the optic system of the eye in 490 persons. Among them, 37 were healthy persons, 27--patients with ametropia of moderate degree, 24--with high myopia, 9--with astigmatism above 3.0 D, 16--with monocular diplopia, 327--with keratoconus, 7--with scars of the cornea, 21--with initial cataract, 47--after keratotomy.

[Hemorrhages in myopia (based on clinical and fluorescence angiographic data)].

The authors analyze the results of examinations of 50 patients (70 eyes) with complicated high myopia, corrected by contact lenses. The mean visual acuity of patients in spectacles has been 0.21, in contact lenses 0.

[The first experience using soft contact lenses during long-term space flights].

During a long-term flight on Salyut-7 and Mir orbital stations a contact lens was used for the first time in order to correct mild ametropia of one of the crew members. He used a soft contact lens for 5 hrs on flight days 10, 30, 45 and 60. As a result, acuity of vision of the treated eye increased to 1.

[Significance of the study of the pachymetric index in the evaluation of the process of eye adaptation to contact lenses].

The authors have examined the thickness of the cornea in 270 patients with weak and moderate myopia during adaptation of the eye to soft or rigid contact lenses. They have revealed a linear correlation between the period of wearing the lens and the degree of the pachometric index change during adaptation of the eye to contact lenses. The maximum permissible period for daily wearing of contact lenses have been determined, not involving essential shifts in water-salt metabolism of the cornea.