Blue Breezes

Bioptical Art - Liviu Iliescu

This apparently fanciful title refers to experiments on colour mixtures within the study of colour fusion. Some mixtures result in a kind of colour pulsation, similar to a gentle breeze blowing over velvet-like grass.

The possible defining of a visual gradient is mainly analysed, account being taken of the fact that image consciousness decreases from the point of acutest vision (the yellow spot) to the blind margin of the eye. Account is also taken of applications to the arts, by interposing a visual hiatus, with extent and colour balanced between the centre and the margins of the composition.

Some of the findings ensuing from bioptical experiments are mentioned: ad hoc educational atmosphere, dynamics of space depth, global perception, with attention pulsations between the centre and the margins of the field of vision.

These result in contemplation moods, also related to the awareness of space and time as psychic magnitudes, evoked by static and plane stimuli from the bioptical picture.

The author describes the impressions made on him by the range of colours in a candle flame and he presents the interaction between the psychic and the physical, connecting it to atavistic feelings.


(Fig. 25)

I–Intensity of visual sensation (on the ordinate).

T–Time of psychic adjustment (measurable and differing from a subject to the other) (on the abscissa).

t–Duration of psychic cycle: vision with the naked eye, then through the bioptical device, then again with the naked eye. The end of the cycle (when the device is removed) is expressed by vector M.

i–Remanent sensations or residual impressions. The psychic cycle is not entirely reversible. When the bioptical device is removed, one sees "with a different eye".

e–Evolution of the hyperspace: occurrence of stereoscopic effects. The composition aims at destroying relations known from conventional representations –spatial values of some colour patches which intersect or superpose. Naturalistic links change (e.g. – the cart wheel is modified in bioptical vision as follows: the felloe, the spokes and the hub acquire positions in hyper-depth, getting transferred into another space, with other relations – somewhat illogical as compared to the normal representation. The phenomenon of retinal cooperation is present.

h–Evolution of the antispace: elements which provide a naturalistic perspective in normal vision (near red, distant blue, vanishing lines towards the horizon) are perceived reverted, in bioptical vision, following slower accommodation. Though the antispace occurs as a phenomenon of pseudoscopy, artistic inspiration may result in perception modifications and psychic contradictions.

f–Evolution of the psychospace: by means of the bioptic device, each eye sees different shapes and colours – e.g. an eye sees a square, the other one a triangle; one sees blue, the other red. Perception oscillates between square and triangle, blue and red. In the case of elements which result in retinal cooperation, colours are fused psycho-physically and the resultant is violet, pulsating to red or blue. The diagram shows the variation in intensity of the visual sensation for a component–a single eye.

e and h–Changes in spatial perception, within a psychic accommodation time, dilated throughout a cycle, depending on the recipient-subject. This time, measurable from without, is placed on a scale physically defined as objective.