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PL is an abbreviation for plano or plain, meaning no prescription; PD or IPD Pupillary Distance or Interpupillary Distance, respectively. It is the distance between pupil centers. BVD Back vertex distance is the distance between the back of the spectacle lens and the front of the cornea (the front surface of the eye). This is significant in ...
Hand motion vision – state distance Hx: History IOL: Intra-ocular lens IOP: Intra-ocular pressure ISNT: Inferior, Superior, Nasal, Temporal rule used to assess optic disc appearance K: Keratometry OS oculus sinister (left eye) LHyperT or LHT: Left hypertropia LHypoT: Left hypotropia LO: Lenticular opacity L/R FD: L/R fixation disparity L/R: L ...
In early 2009, the State Farm Florida subsidiary, the state's largest insurer, offered to withdraw from writing property insurance business in Florida after state regulators refused to approve a 47% property rate increase. State Farm said that, in Florida, it had paid out US$1.21 in claims for every dollar in premiums since 2000.
Man with glasses. A woman with glasses. Glasses, also known as eyeglasses, spectacles, or colloquially as specs, are vision eyewear with clear or tinted lenses mounted in a frame that holds them in front of a person's eyes, typically utilizing a bridge over the nose and hinged arms, known as temples or temple pieces, that rest over the ears for support.
The eye's Abbe number is independent of the importance of the corrective lens's Abbe, since the human eye: Moves to keep the visual axis close to its achromatic axis, which is completely free of dispersion (i.e., to see the dispersion one would have to concentrate on points in the periphery of vision, where visual clarity is quite poor)
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The standard medical definition of Left and Right is from the patients perspective; following this principle, the Left eye is on the same side as my Left hand. If, however, we apply the same principle as for the cylinder axis, my Left eye in the prescription is actually my Right eye because then Left is the left of the optometrist, and not my Left.