Lens, ocular
In a microscope, the lens closest to the eye. Also known as eyepiece. Most light microscopes are binocular, with one ocular lens for each eye.
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- Lentigines
When there is one lentigo, there are usually more lentigines.
- Lentigo
A type of freckle that is a small tan, brown, or black spot which tends to be darker than the usual (ephelis-type) freckle and which do not fade in the winter. This kind of spot is referred to as lentigo simplex. Although lentigines may be part of a genetic disorder, for the most part they […]
- Lentigo maligna melanoma
One of the four clinical types of malignant melanoma and the slowest growing type. Lentigo maligna melanoma typically begins as a patch of mottled pigmentation that is dark brown, tan, or black on sun-exposed skin, such as on the face.
- Lenz microphthalmia syndrome
A genetic disorder characterized by microphthalmia (small eye) or anopthalmia (no eye) associated with malformation of the ears, teeth, fingers, skeleton, and genitourinary system. About half of patients have microcephaly (small head) and mental retardation. The syndrome is inherited in an X-linked recessive manner with females carrying a mutation at one of two separate gene […]
- Leon virus
Type 1 (known as the Brunhilde virus) and Type 2 (known as the Lansing virus). Immunity to one strain does not provide protection against the other two. All three strains are therefore included in the poliovirus vaccine.