
Igitabo cyo gusoma ibiro kibereye abasoma ibiro (presbyopics) gisaba abantu benshi kureba neza no kureba neza, nk'abakozi bo mu biro, abanditsi, abashushanya, abacuranzi, abateka n'abandi….
Iranga: Ifite uturere twagutse cyane two hagati n'utwo hafi; Imiterere yoroshye cyane ikuraho ingaruka zo koga; Guhita uhindura ibintu.
Intego: Abaperesbyope bakorera hafi n'intera iri hagati
Isano iri hagati y'imikorere y'icyerekezo n'intera iri hagati y'ikintu
| Umusomyi wa II 1.3 m | Kugeza kuri metero 1.3 (futi 4) z'amaso meza | |
| Umusomyi II 2 m | Kugeza kuri metero 2 (futi 6.5) z'amaso meza | |
| Umusomyi II 4 m | Kugeza kuri metero 4 (13 ft) z'amaso meza | |
| Umusomyi II 6 m | Kugeza kuri metero 6 (19.6 ft) z'amaso meza |


UBWOKO BWA LENS: Akazi
INTEGO: Indorerwamo y'akazi ku ntera iri hagati n'iri hagati.
*Uduce twagutse cyane two hagati n'utwo hafi
*Igishushanyo cyoroshye cyane gikuraho ingaruka zo koga
*Uburebure bw'amaso bushobora gukoreshwa n'umukoresha uwo ari we wese
*Imyanya y'imikorere y'ikoranabuhanga
*Ihumure ryiza cyane mu maso
*Guhindura ibintu ako kanya
•Ibipimo by'umuntu ku giti cye
Intera y'inyuma
Inguni ya Pantoscope
Inguni yo gupfunyika
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