Sunday, Jul 21 2019 | Time 22:35 Hrs(IST)
image
  • Thirty-five die in UP thunderstorm
  • MP to have Capital and Metropolitan regions
  • Ballots instead of EVMs – Trinamool leaders’ demand at 21 July Shahid Dibas rally
  • WB BJP president challenges Mamata to name the CBI officers who threatened TMC leaders
  • Pro Kabaddi: Gujarat Fortunegiants beat Bengaluru Bulls by 42-24
  • 20 hr countdown begins, Chandrayaan-2 to take a billion dreams to Moon
  • Pilgrimage: HRTC bus service now interconnects Jawalamukhi, Chintpurni
  • Rishi Biswas completes fine win at Milky Moo Bengal Juniors
  • Kerala CM seeks Jaishankar's intervention on British oil tanker seized by Iranian Revolutionary Guards
  • Zarif warns UK against being dragged into war with Iran
  • Hong Kong police announce raid to clear protesters from streets
  • Kabul sees no changes in relations with Pakistan, calls talks productive- President Office
  • 11-yr-old boy killed, his 2 cousins injured as lightning bolt strikes them in Dhule
  • Delhi bids an emotional farewell to Sheila Dikshit
  • Distt admin plans to enroll students to save depleting ground water table
Science Technology


Age-related macular degeneration, a condition affecting older people

Age-related macular degeneration, a condition affecting older people

Kolkata, Sep 6 (UNI) Age-related macular degeneration (AMD) is a condition affecting

older people and involves the loss of the person's central field of vision.

It occurs when the macular (or central) retina develops degenerative lesions. It is

thought that circulatory insufficiency, with reduction in the blood flow to the macular

area, also plays a part. Several forms of AMD exist.

Globally, AMD ranks third as a cause of blindness after cataract and glaucoma. It

is the primary cause in industrialized countries. The main risk factor is ageing.

Other risk factors may include the use of tobacco, genetic tendencies, the degree

of pigmentation (with light coloured eyes being at higher risk), arterial hypertension,

the ultraviolet rays, and consumption of a non-balanced diet.

The early and intermediate stages of AMD usually start without symptoms. Only a

comprehensive dilated eye exam can detect AMD.

The eye exam may includes: Visual acuity test. This eye chart measures how well

you see at distances.

Dilated eye exam: Your eye care professional places drops in your eyes to widen

or dilate the pupils. This provides a better view of the back of your eye. Using a special

magnifying lens, he or she then looks at your retina and optic nerve for signs of AMD

and other eye problems.

Amsler grid: Your eye care professional also may ask you to look at an Amsler grid.

Changes in your central vision may cause the lines in the grid to disappear or appear

wavy, a sign of AMD.

MORE UNI BM

More News
50th anniversary of Moon landing: Google honours Apollo 11 mission

50th anniversary of Moon landing: Google honours Apollo 11 mission

19 Jul 2019 | 11:30 AM

Kolkata, Jul 19 (UNI) To mark the 50th anniversary this week of NASA's Apollo 11 mission - the first time humans set foot on the lunar surface – Google today launched an animated video Doodle.

see more..
World hunger not going down, obesity growing

World hunger not going down, obesity growing

15 Jul 2019 | 10:53 PM

New Delhi, Jul 15 (UNI) More than 820 million people in the world did not have enough to eat in 2018, up from 811 million in the previous year, which is the third year of increase in a row.

see more..

Scientists improve stability and efficiency of solar cells

15 Jun 2019 | 5:32 PM

New Delhi, Jun 15 (UNI) Scientists have improved stability and efficiency of solar cells by using Copper iodide interlayer to achieve increased stability and efficiency in perovskite elements, a promising material for manufacturing solar cells.

see more..
Tanzania 'well prepared' to combat Ebola

Tanzania 'well prepared' to combat Ebola

13 Jun 2019 | 3:37 PM

Dodoma, Jun 13 (UNI) Tanzanians "should not worry" about the spread of Ebola, Health Minister Ummy Mwalimu has said reacting to news that the disease had crossed from the Democratic Republic of Congo to Uganda.

see more..
Food safety is everyone’s business

Food safety is everyone’s business

07 Jun 2019 | 9:31 AM

Kolkata, Jun 7 (UNI) The first ever celebration of the United Nations World Food Safety Day, being marked globally on June 7, aims to strengthen efforts to ensure that the food we eat is safe.

see more..
image