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  2. Vermilion border - Wikipedia

    en.wikipedia.org/wiki/Vermilion_border

    The skin of the face is thicker than the skin overlying the lips where blood vessels are closer to the surface. As a consequence, the margin of the lips shows a transition between the thicker and thinner skin, represented by the vermilion border. It therefore has the appearance of a sharp line between the coloured edge of the lip and adjoining ...

  3. Retinoscopy - Wikipedia

    en.wikipedia.org/wiki/Retinoscopy

    Static retinoscopy is performed when the patient has relaxed accommodative status. This can be obtained by the patient viewing a distance target or by the use of cycloplegic drugs (where, for example, a child's lack of reliable fixation of the target can lead to fluctuations in accommodation and thus the results obtained). Dynamic retinoscopy ...

  4. Retinoschisis - Wikipedia

    en.wikipedia.org/wiki/Retinoschisis

    Retinoschisis is an eye disease characterized by the abnormal splitting of the retina's neurosensory layers, usually in the outer plexiform layer.Retinoschisis can be divided into degenerative forms which are very common and almost exclusively involve the peripheral retina and hereditary forms which are rare and involve the central retina and sometimes the peripheral retina.

  5. Blaschko's lines - Wikipedia

    en.wikipedia.org/wiki/Blaschko's_lines

    Alfred Blaschko, a private practice dermatologist from Berlin, first described and drew the patterns of the lines of Blaschko in 1901. He obtained his data by studying over 140 patients with various nevoid and acquired skin diseases and transposed the visible patterns the diseases followed onto dolls and statues, then compiled the patterns onto a composite schematic of the human body.

  6. What’s With the Dry, Cracked Corners of Your Mouth ... - AOL

    www.aol.com/lifestyle/lips-always-dry-may...

    Maceration of the skin is common with AC—meaning the skin can soften and lighten in color, Dr. Batra says. If the skin gets too irritated, it can break apart and bleed. Other symptoms include:

  7. Retinal pigment epithelium - Wikipedia

    en.wikipedia.org/wiki/Retinal_pigment_epithelium

    When viewed from the outer surface, these cells are smooth and hexagonal in shape. When seen in section, each cell consists of an outer non-pigmented part containing a large oval nucleus and an inner pigmented portion which extends as a series of straight thread-like processes between the rods, this being especially the case when the eye is ...

  8. Outer plexiform layer - Wikipedia

    en.wikipedia.org/wiki/Outer_plexiform_layer

    The outer plexiform layer (external plexiform layer) is a layer of neuronal synapses in the retina of the eye. It consists of a dense network of synapses between dendrites of horizontal cells from the inner nuclear layer , and photoreceptor cell inner segments from the outer nuclear layer .

  9. 11 common bug bites — and photos to help you identify them

    www.aol.com/news/11-common-bug-bites-photos...

    But the venom from a brown recluse spider can cause serious skin problems around the area of the bite, which typically become increasingly painful in the hours after the bite. Black widow spider bites