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ALAT OPTIK 
Mata Emetropi (mata normal) pp = 25 cm ; pr = ¥ 
Mata Myopi (mata dekat/rabun jauh) pp = 25 cm ; pr < ¥ 
M A T A Mata Hipermetropi (rabun dekat) pp > 25 cm ; pr = ¥ 
Mata Presbiopi (mata tua) pp > 25 cm ; pr < ¥ 
Kaca Mata lensa Negatif (Untuk orang Myopi) 
s = ¥ dan s’ = -pr 
KACA MATA 
Kaca Mata lensa Positif (Untuk orang hipermetropi) 
s = 25 cm dan s’ = -pp 
Sd 
Akomodasi max P = +1 
f 
Ditempel dimata 
Sd 
Tanpa Akomodasi P = f 
LOUPE 
Berjarak d cm dari mata D = -s’ + d 
Sd d 
Sd 
Sd 
+ - . 
P = f 
D 
D . 
f 
Sd = titik baca normal 
d = s’oby + sok 
Akomodasi max 
' 
Sd 
s 
oby 
- + 
P = ( 1) 
fok 
s 
oby 
MIKROSKOP 
Tanpa Akomadasi d = s’oby + fok 
' 
Sd 
s 
oby 
oby - 
P = ( ) 
fok 
s 
Akomodasi max d = foby + sok 
f oby Sd + 
f 
ok 
ok 
P = ( ) 
Sd 
f 
TEROPONG BINTANG 
Tanpa akomodasi d = foby + fok 
P = 
oby 
f 
ok 
f

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Alat optik

  • 1. ALAT OPTIK Mata Emetropi (mata normal) pp = 25 cm ; pr = ¥ Mata Myopi (mata dekat/rabun jauh) pp = 25 cm ; pr < ¥ M A T A Mata Hipermetropi (rabun dekat) pp > 25 cm ; pr = ¥ Mata Presbiopi (mata tua) pp > 25 cm ; pr < ¥ Kaca Mata lensa Negatif (Untuk orang Myopi) s = ¥ dan s’ = -pr KACA MATA Kaca Mata lensa Positif (Untuk orang hipermetropi) s = 25 cm dan s’ = -pp Sd Akomodasi max P = +1 f Ditempel dimata Sd Tanpa Akomodasi P = f LOUPE Berjarak d cm dari mata D = -s’ + d Sd d Sd Sd + - . P = f D D . f Sd = titik baca normal d = s’oby + sok Akomodasi max ' Sd s oby - + P = ( 1) fok s oby MIKROSKOP Tanpa Akomadasi d = s’oby + fok ' Sd s oby oby - P = ( ) fok s Akomodasi max d = foby + sok f oby Sd + f ok ok P = ( ) Sd f TEROPONG BINTANG Tanpa akomodasi d = foby + fok P = oby f ok f