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  2. Sulcus (morphology) - Wikipedia

    en.wikipedia.org/wiki/Sulcus_(morphology)

    Clevenger's fissure: found in the inferior temporal lobe of the brain; Collateral fissure: found in the inferior surface of the cerebrum. Fissure of Bichat: found below the corpus callosum in the cerebellum of the brain. Lateral sulcus or Fissure of Sylvius: separates the frontal and parietal lobes of the brain from the temporal lobe.

  3. Snellen chart - Wikipedia

    en.wikipedia.org/wiki/Snellen_chart

    Some clinics do not have 6-metre eye lanes available, and either a half-size chart subtending the same angles at 3 metres (9.8 ft), or a reversed chart projected and viewed by a mirror is used to achieve the correct sized letters. In the most familiar acuity test, a Snellen chart is placed at a standard distance: 6 metres.

  4. Calcarine sulcus - Wikipedia

    en.wikipedia.org/wiki/Calcarine_sulcus

    The calcarine sulcus (or calcarine fissure) is an anatomical landmark located at the caudal end of the medial surface of the brain of humans and other primates. Its name comes from the Latin "calcar" meaning "spur". It is very deep, and known as a complete sulcus.

  5. Epicanthic fold - Wikipedia

    en.wikipedia.org/wiki/Epicanthic_fold

    An epicanthic fold or epicanthus [6] is a skin fold of the upper eyelid that covers the inner corner (medial canthus) of the eye. [3] However, variation occurs in the nature of this feature and the presence of "partial epicanthic folds" or "slight epicanthic folds" is noted in the relevant literature.

  6. Hippocampal sulcus - Wikipedia

    en.wikipedia.org/wiki/Hippocampal_sulcus

    The hippocampal sulcus, also known as the hippocampal fissure, is a sulcus that separates the dentate gyrus from the subiculum and the CA1 field in the hippocampus. Structure [ edit ]

  7. Eye chart - Wikipedia

    en.wikipedia.org/wiki/Eye_chart

    An eye chart is a chart used to measure visual acuity comprising lines of optotypes in ranges of sizes. Optotypes are the letters or symbols shown on an eye chart. [ 1 ] Eye charts are often used by health care professionals, such as optometrists , physicians and nurses , to screen persons for vision impairment .

  8. Sulcus (neuroanatomy) - Wikipedia

    en.wikipedia.org/wiki/Sulcus_(neuroanatomy)

    The sulci and fissures are shallow and deep grooves respectively in the cortex, that organise the brain into its regions. [2] A sulcus is a shallow groove that surrounds a gyrus or part of a gyrus. A fissure is a deeper furrow that divides the brain into lobes, and also into the two hemispheres as the longitudinal fissure. [4]

  9. Palpebral fissure - Wikipedia

    en.wikipedia.org/wiki/Palpebral_fissure

    The fissure may be increased in vertical height in Graves' disease, which is manifested as Dalrymple's sign. It is seen in disorders such as cri-du-chat syndrome. In animal studies using four times the therapeutic concentration of the ophthalmic solution latanoprost, the size of the palpebral fissure can be increased. The condition is reversible.