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Achromatopsia

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feminine noun (medicine / ophthalmology)

Definition

A congenital or acquired ophthalmological condition, genetic or neurological in nature, characterized by the total inability to perceive the colors of the visible spectrum. The affected subject distinguishes only shades of white, black, and gray (monochromatic vision), a state often accompanied by reduced visual acuity, extreme sensitivity to light (photophobia), and involuntary eye movements (nystagmus).

Bilingual Equivalents

  • Achromatopsia
  • Total color blindness

Grammatical & Source Details

Inflection Type Feminine noun with regular technical plural boundaries.
Formation Neologistic borrowing via French 'achromatopsie', rooted in the Greek terms for colorlessness and sight.
Spelling / Pronunciation [a.kro.ma.top.ˈsi.e]
Source Lexicon of Visual Deficiencies and Pathological Ophthalmology

Contextual Usage Examples

RO: Un diagnostic clar de acromatopsie poate fi stabilit în copilărie prin teste specifice de adaptare la întuneric.

EN: A clear diagnosis of achromatopsia can be established in childhood through specific dark adaptation tests.

RO: Deși pacienții cu acromatopsie nu văd nicio culoare, ei pot distinge variații subtile de luminozitate și contrast.

EN: Although patients with achromatopsia see no color, they can distinguish subtle variations in brightness and contrast.

RO: Cercetările moderne din genetică încearcă să trateze această formă de acromatopsie prin intermediul terapiilor celulare.

EN: Modern research in genetics attempts to treat this form of achromatopsia through cellular therapies.

Idioms & Phrases

Acromatopsie congenitală / Congenital achromatopsia

RO: Tulburare ereditară rară transmisă autozomal recesiv, prezentă încă de la naștere din cauza lipsei pigmenților din conuri.

EN: A rare hereditary disorder transmitted autosomally recessively, present from birth due to the lack of cone pigments.

Acromatopsie dobândită / Acquired achromatopsia

RO: Pierderea vederii colorate la vârsta adultă în urma unei leziuni cerebrale, a unui accident vascular ori a unei traume oculare.

EN: The loss of color vision in adulthood following a brain injury, a stroke, or an ocular trauma.

Diagnostic de acromatopsie / Diagnosis of achromatopsia

RO: Protocol clinic oftalmologic care confirmă absența totală a răspunsului celulelor cu conuri la stimulii spectrali.

EN: An ophthalmological clinical protocol confirming the complete lack of cone cell response to spectral stimuli.

Keywords

#acromatopsie #achromatopsia #total color blindness #ophthalmology definition #medical dictionary #eye disorder #monochromatic vision #genetics
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