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Pupils equal, round, reactive to light and accommodation PH Pinhole see Pinhole occluder and Visual_acuity#Legal_definitions: PHNI Pinhole No Improvement see Pinhole occluder and Visual_acuity#Legal_definitions: PHVA Pinhole Visual Acuity: PL Perception of light POH / PrOH Previous ocular history PPA Peri-papillary atrophy Pt Patient RAPD
Microphthalmia (Greek: μικρός, mikros, 'small', ὀφθαλμός, ophthalmos, 'eye'), also referred as microphthalmos, is a developmental disorder of the eye in which one (unilateral microphthalmia) or both (bilateral microphthalmia) eyes are abnormally small and have anatomic malformations.
Prefix: aniso-from the Greek language (meaning unequal), which in turn comes from an: meaning not and iso meaning equal; Root: cor, from the Greek word korē meaning pupil of the eye; Suffix: -ia, which is a Latin suffix meaning a disease or a pathological or abnormal condition; Thus, anisocoria means the condition of unequal pupils.
Pupillary response is a physiological response that varies the size of the pupil between 1.5 mm and 8 mm, [1] via the optic and oculomotor cranial nerve. A constriction response , [2] is the narrowing of the pupil, which may be caused by scleral buckles or drugs such as opiates/opioids or anti-hypertension medications.
The ganglion cells give information about ambient light levels, and react sluggishly compared to the rods and cones. Signals from photosensitive ganglion cells have multiple functions including acute suppression of the hormone melatonin, entrainment of the body's circadian rhythms and regulation of the size of the pupil.
The main symptoms are headache, vision problems, ringing in the ears, and shoulder pain. [1] [2] Complications may include vision loss. [2] This condition is idiopathic, meaning there is no known cause. Risk factors include being overweight or a recent increase in weight. [1] Tetracycline may also trigger the condition. [2]
Various forms of myopia have been described by their clinical appearance: [64] [69] [70] Simple myopia: Myopia in an otherwise normal eye, typically less than 4.00 to 6.00 diopters. [71] This is the most common form of myopia.
Micropsia is a condition affecting human visual perception in which objects are perceived to be smaller than they actually are. Micropsia can be caused by optical factors (such as wearing glasses), by distortion of images in the eye (such as optically, via swelling of the cornea or from changes in the shape of the retina such as from retinal edema, macular degeneration, or central serous ...
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