3 unsur dasar lensa kacamata yang baik yaitu?

LENSA OPTHALMIC

Quiz
•
Specialty
•
Professional Development
•
Easy
SDM Zolaris
Used 2+ times
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15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kenyamanan, tajam penglihatan, tahan pecah
Segi kosmetik, kenyamanan, tahan pecah
Tahan pecah, tajam penglihatan, segi kosmetik
Kenyamanan, segi kosmetik, tajam penglihatan
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Lensa adalah...
Benda transparan yang membelokan sinar
Kelengkungan permukaannya tidak sama disemua meredian
Benda transparan yang meneruskan sinar
Pembiasan bayangan
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Lensa spheris negative memiliki ciri berikut ini, kecuali...
Arah gerakan berlawanan dengan arah gerakan lensa
Arah Gerakan bayangan searah dengan arah Gerakan lensa
Bagian tepi lensa lebih tebal daripada tengah
Jika dijauhkan dari mata bayangan akan terlihat mengecil
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dibawah ini pernyataan indeks bias yang tepat, yaitu…
Ormix : 1,52
Polycarbonat : 1,59
Kaca : 1,67 – 1,71
CR Hi index : 1,61
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Lensa optis mempengaruhi tajam penglihatan suatu objek. Nilai abbe untuk lensa optis sedang yaitu…
Nilai abbe < 40
Nilai abbe 40 - 50
Nilai abbe 35 - 40
Nilai abbe 50 - 55
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kelemahan lensa organik yaitu...
Lebih berat
Tidak anti-UV
Diameter lensa kecil
Tingkat kejernihan lebih rendah
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Perbandingan kecepatan cahaya diruang hampa dengan kecepatan cahaya pada media tertentu merupakan arti dari…
Lensa
Yellowness index
Daya dispersif
Indeks bias
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