[Prevention of amblyopia by active production of the macular fixation reflex in infants]. / Zapobieganie niedowidzeniu na drodze czynnego wytwarzania plamkowego odruchu fiksacyjnego u niemowlqt.

Among 1455 examined babies aged 3 months the authors found a lack of normal fixation reflex in both eyes in 155 and in 52 in one eye only. In these eyes the parents applied 3 times a day an alternate occlusion of eyes or of the master eye only showing the babies interesting toys. After 2 weeks 83 babies showed normalization of fixation and after following 2 weeks of over described occlusion only 8 of them did not reveal a normal fixation reflex. These babies exhibited also a convergent squint. The pleoptic treatment by means of an euthyscope was installed, followed by normalization of the fixation reflex in 3. The rest of the patients was treated with spheroprismatic glasses by localization method.

Erythropoietic effect of ultraviolet radiation in blind rats in comparison with control seeing rats.

In 40 blinded rats erythropoiesis parameters were determined in four groups of 10 animals each and were compared with similar parameters in seeing control rats. Two group of blind rats received ultraviolet radiation 405-289 nm wavelength; 140 000 erg/sec/cm2 daily for 10 minutes during 2 or 4 weeks. Two other groups served as non-irradiated blind controls. The determined parameters showed the following rise (+) or fall (-) in per cent in relation to the non-irradiated rats: haematocrit (H) +3.6 and 9.3; erythrocyte count (E) +15.1 and 13.2; reticulocyte count (R) +65.5 and 184.1; haemoglobin level (Hb) +6.6 and 13.1; 59Fe incorporation index into erythrocytes (EFe) +27.3 and 30.4, into spleen (SFe) +35.8 and 34.3, into liver (LFe) -20.9 and -19.3, into bone marrow (BFe) -22.8 and -41.9. In the seeing animals all these parameters were significantly greater; H +11.4 and 7.9; E +56.9 and 26.6; R +288.9 and 199.1; Hb +22.3 and 5.1; EFe +64.1 and 42.5; SFe +195.8 and 134.7; LFe -35.4 and -29.9; BFe -65.2 and -57.2.