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2. Corrective lens - Wikipedia

   en.wikipedia.org/wiki/Corrective_lens

   In glasses with powers beyond ±4.00D, the vertex distance can affect the effective power of the glasses. [4] A shorter vertex distance can expand the field of view, but if the vertex distance is too small, the eyelashes will come into contact with the back of the lens, smudging the lens and causing annoyance for the wearer.

3. Eyeglass prescription - Wikipedia

   en.wikipedia.org/wiki/Eyeglass_prescription

   This may represent a single-vision lens prescription to improve near work, or the reading portion of a bifocal lens. OD is an abbreviation for oculus dexter, Latin for right eye from the patient's point of view. Oculus means eye. OS is an abbreviation for oculus sinister, Latin for left eye from the patient's point of view.

4. Human eye - Wikipedia

   en.wikipedia.org/wiki/Human_eye

   The pupil of the human eye can range in size from 2 mm to over 8 mm to adapt to the environment The human eye can detect a luminance from 10 −6 cd/m 2 , or one millionth (0.000001) of a candela per square meter to 10 8 cd/m 2 or one hundred million (100,000,000) candelas per square meter.

5. List of unsolved murders in the United Kingdom (1980s)

   en.wikipedia.org/wiki/List_of_unsolved_murders...

   A couple of men who had contact with Perigo around the time of her death were never traced. [182] The case was featured on Crimewatch in July 1986. [183] May 1986 Richard Griffith Reading, Berkshire Griffith, a 20-year-old from Stockwell in London, was stabbed in the heart early on 18 May 1986 at a party on Oxford Road, Reading. Thirteen months ...

6. Morris Marina - Wikipedia

   en.wikipedia.org/wiki/Morris_Marina

   Additionally, in an attempt to compete with the Holden Torana and Ford Cortina 6-cylinder models, the Marina was also offered from November 1973 [25] with a 121 hp (90 kW) 2600 cc E-series six-cylinder engine. This indigenous Marina variant was capable of 0–60 mph in under nine seconds.

7. Flight attendant - Wikipedia

   en.wikipedia.org/wiki/Flight_attendant

   The first female flight attendant was a 25-year-old registered nurse named Ellen Church. [6] Hired by United Airlines in 1930, [7] she also first envisioned nurses on aircraft. Other airlines followed suit, hiring nurses to serve as flight attendants, then called "stewardesses" or "air hostesses", on most of their flights.