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Early this month Miss Shen (a member of the ESH Department) arranged a vision care activity. She hoped we do not have high eye pressure.

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Fortunately for me, My intraocular pressures were between 10 mmHg and 20 mmHg. I have the normal intraocular pressures.

Then I had an eyesight test.  A health professional said I have low degrees of Myopia. And today I found the abbreviation ‘’. What’s the meaning of PD? I consulted the wiki and I thought ‘PD’ is the abbreviation for ‘Pupillary distance’. The typical pupillary distance for adults is around 54-68 mm, measurements generally fall between 48 and 73 mm. And My pupillary distance is 68. seems normal. And I googled the Opticians don’t want give you PD data. I felt it’s very strange why a 20 something approach Golfnorth and sheepishly ask if Golfnorth could measure her ‘pupil distance’.

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But I surfed Zenni: the #1 online eyeglasses store later on and wanted to order beautiful eyeglasses. I understood PD and OD are very important. So let ‘Opticians keep you away from ZenniOpt’.

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