Physical and chemical parameters of immune complexes were studied in cataract patients before and after surgery with laser nephelometry. The authors suggest a possible uveitogenous role of the circulating immune complexes of medium size (from 7 to 21 IgG) and high concentration (over 1.2 mg/ml) in the development of postoperative complications of an inflammatory nature.

Antigen-Antibody Complex↗

PubMedDate not supplied

[Cost accounting for the expenditures in the examination of ophthalmology patients].

The system of estimating the cost of care of ophthalmologic patients improves out- and inpatient registration and helps assess the medical aid rendered to the patients; it permits an effective exploitation of the resources of therapeutic institutions and helps coordinate the activities of various departments.

Accounting↗

PubMedDate not supplied

[Resistance to blindness and frequency-contrast characteristics of the eye with artificial lens].

Contrast sensitivity of vision was examined by the frequency-contrast characteristics method (FCC) and vision resistance to glare studies with Niktoskop equipment in 48 patients with artiphakia. FCC was estimated from the curve shape as well as from the mean threshold contrast in all space frequencies. Blindness resistance was assessed from the period of mesopic vision acuity recovery (MVAR) up to 0.3 diopters after the glare flash. The group included 28 patients with iris clips lenses and 20 with posterior-chamber lenses. Patients with vision acuity of 0.8-1.0 diopters were referred to the first and those with vision acuity of 0.5-0.7 diopters to the second category. The mean threshold contrast, whose normal value is 8.0 +/- 0.7 percent, was drastically elevated 3 months after surgery in all the patients and only in a year normalized in the first-category patients with iris clips lenses or posterior-chamber lenses after posterior chamber dissection. Blindness resistance of patients with intraocular lenses was on the whole worse than in normal eyes: MVAR was by 26.2 +/- 0.7 percent higher than the normal value and normalized to reach 29.0 +/- 0.6 sec only in a year in the first-category patients with posterior-chamber lenses whose posterior capsule was not dissected. Therefore, FCC and MVAR values depend on the end vision acuity and type of intraocular lens and are on an average better after implantation of posterior-chamber lenses and not of iris clips lenses.

Contrast Sensitivity↗