Now Viewing: eye_chart

Tag type: General

An eye chart is a test used to measure a person's visual acuity. Common in Japan is the Landolt C test, where the chart contains circles with small gaps and the subject has to determine on which side the gap lies.

Visual acuity is measured by two numbers, where the first number is the distance the subject needs to read something and the second number is the distance a normal person needs. In America, it is standard for the first number to be 20 (feet), with 20/20 being normal vision. In Japan and countries that use the metric system, the standard is 6 (meters), with normal vision being 6/6.

h4.See also

* Landolt C
* occluder



Other Wiki Information

Warning: Undefined variable $webmLink in /home/bbooru/public_html/includes/wiki/wiki_view.php on line 88
alt=" black_bra bra bra_visible_through_clothes breasts brown_hair commentary_request eye_chart female highres ishizaka_ryuudai lab_coat lace lace_bra large_breasts leaning_forward looking_at_viewer occluder open_mouth original partially_unbuttoned pointer pov purple_eyes underwear " border="0" title=" black_bra bra bra_visible_through_clothes breasts brown_hair commentary_request eye_chart female highres ishizaka_ryuudai lab_coat lace lace_bra large_breasts leaning_forward looking_at_viewer occluder open_mouth original partially_unbuttoned pointer pov purple_eyes underwear score: rating:safe" class="preview"/> Warning: Undefined variable $webmLink in /home/bbooru/public_html/includes/wiki/wiki_view.php on line 88
alt=" 6+girls a_summer_day's_dream animal_ears bed black_hair blonde_hair book bottle box broom bunny_ears camera chair clock closed_eyes desk dreamcast eating everyone eye_chart female from_above from_behind gap ghost grey_hair hakurei_reimu hat hitodama houraisan_kaguya ibuki_suika inaba_tewi isometric izayoi_sakuya japanese_clothes kimono kirisame_marisa konpaku_youmu long_hair looking_at_viewer maid maid_headdress maid_uniform maikaze microphone minigirl multiple_girls oni patchouli_knowledge poster pov pov_eye_contact purple_hair rails reading red_eyes reisen_udongein_inaba remilia_scarlet ribbon saigyouji_yuyuko sega_dreamcast shameimaru_aya shoes short_hair sitting skirt skirt_lift sleeping standing tail tea television tengu tokine_(maikaze) touhou wall_scroll window wings yagokoro_eirin yakumo_yukari yawn yawning " border="0" title=" 6+girls a_summer_day's_dream animal_ears bed black_hair blonde_hair book bottle box broom bunny_ears camera chair clock closed_eyes desk dreamcast eating everyone eye_chart female from_above from_behind gap ghost grey_hair hakurei_reimu hat hitodama houraisan_kaguya ibuki_suika inaba_tewi isometric izayoi_sakuya japanese_clothes kimono kirisame_marisa konpaku_youmu long_hair looking_at_viewer maid maid_headdress maid_uniform maikaze microphone minigirl multiple_girls oni patchouli_knowledge poster pov pov_eye_contact purple_hair rails reading red_eyes reisen_udongein_inaba remilia_scarlet ribbon saigyouji_yuyuko sega_dreamcast shameimaru_aya shoes short_hair sitting skirt skirt_lift sleeping standing tail tea television tengu tokine_(maikaze) touhou wall_scroll window wings yagokoro_eirin yakumo_yukari yawn yawning score: rating:safe" class="preview"/> Warning: Undefined variable $webmLink in /home/bbooru/public_html/includes/wiki/wiki_view.php on line 88
alt=" &gt;_&lt; 5girls adjusting_eyewear aoki_reika bespectacled blue-framed_eyewear bow candy_(smile_precure!) closed_eyes clothes_around_waist commentary_request copyright_name eye_chart eyelashes glasses green-framed_eyewear hair_ornament hairpin heart heart-shaped_eyewear highres hino_akane_(smile_precure!) hoshizora_miyuki landolt_c loafers mahkn midorikawa_nao multiple_girls nanairogaoka_middle_school_uniform necktie one_eye_closed pink-framed_eyewear pink_bow precure red-framed_eyewear school_uniform semi-rimless_eyewear shoes sleeves_rolled_up smile_precure socks standing sweater sweater_around_waist under-rim_eyewear yayoi_kise yellow-framed_eyewear " border="0" title=" >_< 5girls adjusting_eyewear aoki_reika bespectacled blue-framed_eyewear bow candy_(smile_precure!) closed_eyes clothes_around_waist commentary_request copyright_name eye_chart eyelashes glasses green-framed_eyewear hair_ornament hairpin heart heart-shaped_eyewear highres hino_akane_(smile_precure!) hoshizora_miyuki landolt_c loafers mahkn midorikawa_nao multiple_girls nanairogaoka_middle_school_uniform necktie one_eye_closed pink-framed_eyewear pink_bow precure red-framed_eyewear school_uniform semi-rimless_eyewear shoes sleeves_rolled_up smile_precure socks standing sweater sweater_around_waist under-rim_eyewear yayoi_kise yellow-framed_eyewear score: rating:safe" class="preview"/> Warning: Undefined variable $webmLink in /home/bbooru/public_html/includes/wiki/wiki_view.php on line 88
alt=" blonde_hair blue_eyes cabinet chair chart clothing cupboard derpy_hooves doing_it_wrong english_text equid equine exam eye_chart female friendship_is_magic furniture hair hand_soap hasbro hat headgear headwear heart_symbol hospital humor mammal my_little_pony mythological_creature mythological_equine mythology nurse office optometrist optometry pegasus pink_hair poster shocked sink sitting standing text tongue_depressor unknown_artist wings yellow_eyes " border="0" title=" blonde_hair blue_eyes cabinet chair chart clothing cupboard derpy_hooves doing_it_wrong english_text equid equine exam eye_chart female friendship_is_magic furniture hair hand_soap hasbro hat headgear headwear heart_symbol hospital humor mammal my_little_pony mythological_creature mythological_equine mythology nurse office optometrist optometry pegasus pink_hair poster shocked sink sitting standing text tongue_depressor unknown_artist wings yellow_eyes score: rating:safe" class="preview"/> Warning: Undefined variable $webmLink in /home/bbooru/public_html/includes/wiki/wiki_view.php on line 88
alt=" bare_shoulders black_thighhighs blush breasts brown_eyes brown_hair coat commentary_request duplicate eye_chart female full_body garter_straps hair_behind_ear hand_on_own_hip highres holding holding_pointer impossible_clothes impossible_shirt indoors kesoshirou lab_coat landolt_c large_breasts legs_apart long_sleeves looking_at_viewer mask mask_pull miniskirt mouth_mask off_shoulder original parted_lips pencil_skirt pointer purple_eyes sandals shirt short_hair side_slit single_garter_strap skirt sleeveless sleeveless_turtleneck sleeves_rolled_up solo standing surgical_mask thighhighs thighs tiptoes turtleneck white_coat " border="0" title=" bare_shoulders black_thighhighs blush breasts brown_eyes brown_hair coat commentary_request duplicate eye_chart female full_body garter_straps hair_behind_ear hand_on_own_hip highres holding holding_pointer impossible_clothes impossible_shirt indoors kesoshirou lab_coat landolt_c large_breasts legs_apart long_sleeves looking_at_viewer mask mask_pull miniskirt mouth_mask off_shoulder original parted_lips pencil_skirt pointer purple_eyes sandals shirt short_hair side_slit single_garter_strap skirt sleeveless sleeveless_turtleneck sleeves_rolled_up solo standing surgical_mask thighhighs thighs tiptoes turtleneck white_coat score: rating:safe" class="preview"/> Warning: Undefined variable $webmLink in /home/bbooru/public_html/includes/wiki/wiki_view.php on line 88
alt=" bare_shoulders black_thighhighs blush breasts coat eye_chart female full_body garter_straps hair_behind_ear hand_on_own_hip highres holding holding_pointer indoors kesoshirou lab_coat landolt_c large_breasts legs_apart long_sleeves looking_at_viewer mask mask_pull mouth_mask off_shoulder original parted_lips pencil_skirt pointer purple_eyes short_hair side_slit single_garter_strap skirt sleeveless sleeveless_turtleneck sleeves_rolled_up solo standing surgical_mask thighhighs thighs tiptoes turtleneck white_coat " border="0" title=" bare_shoulders black_thighhighs blush breasts coat eye_chart female full_body garter_straps hair_behind_ear hand_on_own_hip highres holding holding_pointer indoors kesoshirou lab_coat landolt_c large_breasts legs_apart long_sleeves looking_at_viewer mask mask_pull mouth_mask off_shoulder original parted_lips pencil_skirt pointer purple_eyes short_hair side_slit single_garter_strap skirt sleeveless sleeveless_turtleneck sleeves_rolled_up solo standing surgical_mask thighhighs thighs tiptoes turtleneck white_coat score: rating:safe" class="preview"/>

View more »