NASA Experiments fulfilled by the Russian cosmonaut in the frames of the annual medical program

Experiment Ocular Health


Objectives:

  • The determination of time sequence of signs and symptoms occurrence in-flight and of their disappearance after the flight.
  • Determining if signs and symptoms of intracranial hypertension syndrome with visual impairment (IHVI) disappear after the flight, and identification of long-term changes impact on crew members health status.
  • The description of the connection between weightlessness' continuance and severity of symptoms, i.e. dose-effect dependence.
  • The description of IHVI syndrome development mechanism for working out protective and preventive measures and treatment.

Tasks:

  • More profound understanding of IHVI rate of occurrence, signs, symptoms, susceptibility and duration of development and decrement periods.
  • Development of recommendations concerning methods and means of prevention and target treatment for the purpose of preventing IHVI and its complications.

Experiment consists of several stages:

  • Eye grounds' ophthalmoscopy (funduscopy). During the research there are conducted photographing and shooting short videos of an eye.
  • Tonometry with the arterial pressure measurement. The tester's intraocular pressure is defined by means of tonometry.
  • Sight test. The operator carries out standard computerized sight tests - visual acuity, Amsler's test and contrast sensitivity.
  • Eye's ultrasound examination, vessels' flexibility and transcranial Doppler sonography. Tester makes eye's ultrasound examination, vessels' flexibility test (echocardiogram, electrocardiogram, arterial pressure) and transcranial Doppler sonography.

Used science hardware:

  • ultrasonic medical device and corresponding expendable materials (gel, electrocardiogram's electrodes, dry tissues and others) for eyes and heart examination and also for the transcranial Doppler sonography;
  • tonometer used for medical control and measurement of intraocular pressure;
  • funduscope for retina examination;
  • cuff for blood pressure measurement;
  • card and software for sight changes' registration;
  • OCT camera and spectrometer;
  • SSC (equipment for data gathering);
  • communication system of American Segment ASC (for carrying out sight examination, funduscopy and OCT).

Results of the experiment:

Flight data on health status of tester's organs of vision.

ISS Crew


PARMITANO Luka PARMITANO
Luka



KOCH Christina  KOCH
Christina



SKVORTSOV Alexandr SKVORTSOV
Alexandr



MORGAN   Andrew MORGAN
Andrew



  SKRIPOCHKA
Oleg



   MEIR
Jessica