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Photoreceptor cells are highly specialized, light-sensitive neurons located in the retina of the eye that are essential for the perception…

The retina is the innermost, light-sensitive layer of the eye that plays a central role in the visual system by…

The eye is a highly specialized, complex organ responsible for vision, one of the most important senses in humans and…

The conjunctiva is a thin, transparent mucous membrane that lines the inner surface of the eyelids and covers the anterior…

The iris is the colored, circular structure of the eye that surrounds the pupil and controls the amount of light…

Xerophthalmia is a progressive eye disease caused by vitamin A deficiency, characterized by dryness of the conjunctiva and cornea due…

The cornea is the transparent, dome-shaped front part of the eye that covers the iris, pupil, and anterior chamber. It…

Keratomalacia is a severe, sight-threatening eye disorder resulting from profound vitamin A deficiency, characterized by softening and ulceration of the…

The epidermis is the outermost layer of the skin, serving as the body’s primary protective barrier against environmental threats, mechanical…

The skin is the largest organ of the human body, serving as a complex and dynamic barrier that protects internal…

Vitamin  Fat-Soluble Vitamin   Water-Soluble Vitamin Vitamin A Vitamin A Deficiency Vitamin B1  Vitamin B2   Vitamin B3   Vitamin B5  Vitamin B6…

Nyctalopia, commonly referred to as night blindness, is a condition characterized by impaired vision in low-light or dark environments.  Individuals…

Vitamin A deficiency is a significant public health concern, particularly in developing countries, where it is a leading cause of…

Megaloblastic anemia is a type of macrocytic anemia characterized by the presence of abnormally large, immature red blood cells (called…

Pernicious anemia is a form of megaloblastic anemia caused by vitamin B12 (cobalamin) deficiency, specifically resulting from the inability to…