近用眼鏡配置新概念 - 眼鏡

Table of Contents

sazana:要用fixation disparity分析,調節輻輳模型、眼位等的... 06/18 17:01
sazana:還真是沒什麼用...06/18 17:01
sazana:請教(模糊影像融合所需的輻輳負擔低於清晰影像)如何證明? 06/18 17:02
sazana:FD在教科書中算是另一個大家很陌生的門派吧.... 06/18 17:12
sazana:因為測量需要特定儀器...不易取得06/18 17:13

是啊 :)

您懂我的意思了..我想我舉的例子應該簡單易懂..

傳統驗光程序沒有將fixation disparity的影響納入..




因為先前許多版友來配鏡..

我用輻輳調節模型式的結果給予試鏡架處方..

卻發現還是出現輻輳疲勞之相關症狀..

一開始不知道是哪邊出了問題..想解決但摸不著頭緒..

後來才慢慢意會到是fixation disparity的影響..


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"模糊影像融合所需的輻輳負擔低於清晰影像"相關論文


[Dark vergence in relation to fixation disparity at different luminance

and blur levels ] by Wolfgang Jaschinski-Kruza


Abstract

Fixation disparity was measured psychophysically when subjects viewed a

central fusion stimulus at 50 cm distance. Reducing luminance and increasing

target blur resulted in an exophoric shift of fixation disparity. Fixation

disparity was significantly more exophoric in subjects with distant dark

vergence, i.e. the resting position of vergence. This was true for the bright

and sharp target, as well as for targets impaired by blurring or dimming.

These results are interpreted as a bias of fixation disparity towards the

individual resting position of vergence not only for degraded stimuli but

also for strong central fusion stimuli.






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All Comments

Wallis avatarWallis2011-06-20
要用fixation disparity分析,調節輻輳模型、眼位等的...
Agatha avatarAgatha2011-06-25
還真是沒什麼用...
Ingrid avatarIngrid2011-06-27
請教(模糊影像融合所需的輻輳負擔低於清晰影像)如何證明?
Heather avatarHeather2011-07-02
FD在教科書中算是另一個大家很陌生的門派吧....
Barb Cronin avatarBarb Cronin2011-07-02
因為測量需要特定儀器...不易取得
Donna avatarDonna2011-07-02
模糊或暗光下的FD會朝外斜偏差,未說明內斜是否也朝外斜偏
Quanna avatarQuanna2011-07-03
所以對眼位不正的處理方式以FD來看就是"適當的模糊"?
Candice avatarCandice2011-07-08
您注意看內文摘要.."觀察50cm處物體"呈現外偏斜 :)
Candice avatarCandice2011-07-12
模糊狀態..FD較高..輻輳負擔會較低..
Frederic avatarFrederic2011-07-13
清晰狀態..FD較低..輻輳負擔會較高..可給予稜鏡舒緩..
Quintina avatarQuintina2011-07-17
exophoric shift->FD朝exo移動->不管屬ortho、eso、exo FD?
Michael avatarMichael2011-07-18
或指exo往更exo shift /eso往更eso shift? 容忍值變大?
Rae avatarRae2011-07-22
我想這實驗結果詮釋方式可以如下述..
Ophelia avatarOphelia2011-07-27
如果調節輻輳模型式預估觀察某點所需輻輳量為C(total)
Edith avatarEdith2011-07-27
令真實輻輳負擔為C(real)..則 C(total) = C(real) + FD
Thomas avatarThomas2011-07-28
|C(total)| > | C(real)| , 且 C(total)*C(real) > 0
Candice avatarCandice2011-08-01
|FD| α [blur level] # FD的絕對值和模糊程度成正相關
Olivia avatarOlivia2011-08-02
您了解FD和associated phoria的不同嗎?
Kama avatarKama2011-08-04
FD的值非常小(相較於聚合量)
Zenobia avatarZenobia2011-08-07
FD越大,超出panum's fusional area即會出現複影
Dinah avatarDinah2011-08-09
恩..學習ing..