TEN YEAR STUDY IN PATIENTS SUFFERING FROM RETINITIS PIGMENTOSA AND TREATED WITH REPEATED CYCLES OF OZONE THERAPY.
M. Copello, S. MenŽndez1, I. Horrach, J. Betancourt.
National Reference Center of Retinitis Pigmentosa. Salvador Allende University Hospital, Cuba.
1Ozone Research Center, Cuba.

Retinitis Pigmentosa is an hereditary disease of the retina which produces night blindness, peripheral visual field loss and narrowing of the central vision, which degenerates, after several years, in total blindness. This disease affects approximately 0.5 % of the world population and it is estimated that in Cuba suffer this disease, 3.1 per 10,000 habitants, with a great incidence in the central and west region of the country. In Cuba, it has been using ozone therapy like part of the treatment of Retinitis Pigmentosa, since November 1986, in "Salvador Allende" University Hospital. A study of the clinical evolution of 20 patients that have been treated (between 5 and 10 years) with repetitive cycles of ozone therapy was performed. No other therapy was associated. The ways of ozone application was autohemotherapy or rectal insufflation. A complete ophthalmologic examination was performed during this period. Snellen visual acuity, considering significant changes more than 2 lines and Goldmann kinetic visual field (V-4e target), considering significant changes increase in more than 10 grades and/or appearance of peripheric windows, were analyzed. The best results were achieved when ozone treatment is repeated, at least, twice a year, along all these years, with improvement of 70 % in the visual field and 42 % in the visual acuity. The rest of the patients maintained their visual field or visual acuity the same as the initial value, without worsen the disease. Any side effect was observed. The satisfactory results encourage to recommend its use in patients affected by Retinitis Pigmentosa.

CONTROLLED CLINICAL TRIAL ON THE USE OF OZONATED BLOOD AS A TREATMENT FOR RETINITIS PIGMENTOSA.
N. Moreno, O. Pel‡ez, T. Alem‡n, C. Barcel—.
International Reference Center of Retinitis Pigmentosa "Camilo Cienfuegos", Cuba.

The aim of this study is to determine the effects of ozone as a therapy for patient with retinitis pigmentosa. A double blind, placebo controlled study was designed, in which 123 patients, ages 15 to 65 years, and suffering from typical forms of retinitis pigmentosa participated Sixty two patients were randomly assigned to the treatment group and 61 to the control group. A complete general and ophthalmologic examination was performed after signing an informed consent Snellen visual acuity was measured (less than 2.5 lines considered non significant changes) and Goldmann kinetic visual field with 31.5 asb. background and V-4e target. Visual field areas were digitized and measured with a computer program (VISUAL). Ozonated blood was administered to patients in the treatment group, in a daily fashion for 15 days, while patients in the control group received only blood. Participants were blind with regards to this, throughout the duration of the study Visual acuity remained the same, 6 months after the treatment, in 74.2 % of the patients, improve in 21 % and worsen in 4.8 %. Visual field area remained the same, 6 months after the treatment, in 41.9 % of the patients, improve in 46.7 % and worsen in 11.35 %. Significant differences were observed between groups, with lower frequencies of improvements in controls are larger proportions of worsening. Improvements were not observed in 91.9 % of patients one year after the treatment. This tendency was first noted after 6 months from the treatment. Ozone treatment is proved of benefit in patients with RP, although its action is temporary. Repeated administration after 6 months is recommendable to maintain its action.

 

EFECTS OF OZONE IN PATIENTS WITH RETINITIS PIGMENTOSA.
Y. Mapolon, M. Palma1, E. Resio, M. Rodr’guez, E. Dyce1, C. Harrys, J. C. Pina1.
Retinitis Pigmentosa Center, Camagźey, Cuba.
1Dr. Eduardo Agramonte Pina Children Hospital, Camagźey, Cuba.

The effects of ozone in 50 patients with retinitis pigmentosa was evaluated in the Retinitis Pigmentosa Center, Camagźey, Cuba. The patients suffer of photophobia, photopsia and reduce vision on dark places. Considering that the patients with remission of two symptoms of the disease after the ozone treatment is considered as signs improvement, in this case all of them after the 7th and 8th ozone application didn't present photophobia and phototopsia, increasing also the quality of their vision (by means of improvement in the visual acuity and visual field). In spite of, after 6 month the appearance of signs and symptoms in all the patients took place. It is considered that the results are important and very useful as alternative in patients that not admit the surgery, repeating it twice a year.