JP4591728B2 - Eye drops for improving eye strain - Google Patents

Eye drops for improving eye strain Download PDF

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Publication number
JP4591728B2
JP4591728B2 JP36931099A JP36931099A JP4591728B2 JP 4591728 B2 JP4591728 B2 JP 4591728B2 JP 36931099 A JP36931099 A JP 36931099A JP 36931099 A JP36931099 A JP 36931099A JP 4591728 B2 JP4591728 B2 JP 4591728B2
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Japan
Prior art keywords
eye
improving
eye drop
focus adjustment
caffeine
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Expired - Lifetime
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JP36931099A
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Japanese (ja)
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JP2000247885A5 (en
JP2000247885A (en
Inventor
文庸 江上
留美 落合
順子 大内
孝則 小団扇
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Taisho Pharmaceutical Co Ltd
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Taisho Pharmaceutical Co Ltd
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Priority to JP36931099A priority Critical patent/JP4591728B2/en
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Publication of JP2000247885A5 publication Critical patent/JP2000247885A5/ja
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  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、眼精疲労改善を目的とした点眼剤に関する。
【0002】
【従来の技術】
Visual Display Terminal(VDT)作業や読書、注視作業、観察作業等の目の酷使や精神的緊張による眼精疲労に対する回復においては、ピント調節薬のメチル硫酸ネオスチグミンやビタミンB12を含有した点眼剤が用いられている。
【0003】
カフェインは、覚醒作用があり、内服液剤等で広く使用されており、また、点眼剤としては、薬物の溶解補助剤として検討されているが、眼精疲労改善に関する検討はなされていない。
【0004】
【発明が解決しようとする課題】
本発明の目的は目の酷使や精神的緊張による眼精疲労に対する改善効果が高い点眼剤を提供することにある。
【0005】
【課題を解決するための手段】
本発明者らは鋭意研究を進めた結果、カフェインを有効成分として配合する点眼剤が眼精疲労を改善できることを見いだし、本発明を完成した。並びに、本発明は、カフェインにメントール又はタウリン組み合わせた点眼剤が、眼精疲労改善に非常に効果が高いことを見出し、本発明を完成した。
【0006】
【発明の実施の形態】
本発明において、カフェインの配合量は、0.01〜1.0重量%であり、好ましくは0.1〜0.5重量%であり、更に好ましくは、0.1〜0.15重量%である。
【0007】
また、更にカフェインにメントール又はタウリンを組み合わせた点眼剤は、眼精疲労改善効果が非常に高くなる。メントールの配合量は、0.005〜0.1重量%であり、好ましくは0.01〜0.05重量%である。タウリンの配合量は、0.1〜3.0重量%、好ましくは0.2〜1.0重量%である。pH及び浸透圧は、眼精疲労を起こしている眼に対し、刺激を与えない範囲が好ましい。pHは、5.0〜8.0、好ましくは6.5〜7.5である。浸透圧は、250〜450mOsm、好ましくは260〜360mOsmである。
【0008】
本発明の点眼剤は、カフェイン、並びにカフェイン及びメントール又はタウリンを加え、無機塩類を浸透圧が250〜450mOsmになる量を滅菌精製水に溶解し、ホウ砂等のpH調節剤でpHを5.0〜8.0に調整することにより調製することができる。
【0009】
本発明の点眼剤には、必要に応じて、抗炎症剤(グリチルリチン酸二カリウム、イプシロンアミノカプロン酸、アラントイン、塩化ベルベリン、硫酸ベルベリン、アズレンスルホン酸ナトリウム、硫酸亜鉛、乳酸亜鉛、塩化リゾチームなど)、ビタミン類(ビタミンB2、ビタミンB6、ビタミンB12、パンテノール、パントテン酸カルシウム、パントテン酸ナトリウム、ビタミンAアセテートなど)、アミノ酸(L−アスパラギン酸マグネシウム・カリウム、L−アスパラギン酸カリウム、L−アスパラギン酸マグネシウム、コンドロイチン硫酸ナトリウムなど)、防腐剤(塩化ベンザルコニウム、クロロブタノールなど)、緩衝剤(クエン酸,ホウ酸など)、pH調節剤(ホウ砂など)、等張化剤(塩化ナトリウムなど)、溶解補助剤(ポリオキシエチレン硬化ヒマシ油,ポリオキシエチレンソルビタンモノオレートなど)などを本発明の効果を損なわない範囲で配合することができる。
【0010】
【発明の効果】
本発明により、目の酷使や精神的緊張による眼精疲労に対する改善効果が高い点眼剤を提供することが可能になった。
【0011】
【実施例】
以下、実施例及び試験例を挙げて、本発明をさらに詳細に説明する。
【0012】
実施例1
カフェイン100mg、塩化ナトリウム740mg、塩化カリウム80mgを滅菌精製水90mlに溶解し、ホウ砂でpHを7.4に調整した後、滅菌精製水を加えて全量を100mlとし点眼剤を調製した。この点眼剤の浸透圧は測定の結果、286mOsmであった。
【0013】
実施例2
カフェイン100mg、メントール10mg、塩化ナトリウム740mg、塩化カリウム80mgを滅菌精製水90mlに溶解し、ホウ砂でpHを7.4に調整した後、滅菌精製水を加えて全量を100mlとし点眼剤を調製した。この点眼剤の浸透圧は測定の結果、287mOsmであった。
【0014】
実施例3
カフェイン100mg、タウリン1000mg,塩化ナトリウム500mg、塩化カリウム100mgを滅菌精製水90mlに溶解し、ホウ砂でpHを7.4に調整した後、滅菌精製水を加えて全量を100mlとし点眼剤を調製した。この点眼剤の浸透圧は測定の結果、288mOsmであった。
【0015】
実施例4
カフェイン100mg、メントール10mg、タウリン1000mg,塩化ナトリウム500mg、塩化カリウム100mgを滅菌精製水90mlに溶解し、ホウ砂でpHを7.4に調整した後、滅菌精製水を加えて全量を100mlとし点眼剤を調製した。この点眼剤の浸透圧は測定の結果、290mOsmであった。
【0016】
実施例5
カフェイン500mg、メントール10mg、タウリン1000mg,塩化ナトリウム500mg、塩化カリウム100mgを滅菌精製水90mlに溶解し、ホウ砂でpHを7.4に調整した後、滅菌精製水を加えて全量を100mlとし点眼剤を調製した。この点眼剤の浸透圧は測定の結果、303mOsmであった。
【0017】
比較例1
塩化ナトリウム750mg、塩化カリウム90mgを滅菌精製水90mlに溶解し、ホウ砂でpHを7.4に調整した後、滅菌精製水を加えて全量を100mlとし点眼剤を調製した。この点眼剤の浸透圧は測定の結果、286mOsmであった。
【0018】
試験例1
検体として本発明の実施例1の点眼剤、対照検体として比較例1の点眼剤を用いた。
【0019】
健常人10名に対して、眼精疲労を1時間のVDT作業(足し算作業)により惹起させた。次いで各人に対して、VDT作業終了直後に1回、それぞれ各点眼剤を0.1mlずつ両眼に点眼し、疲労惹起前(VDT作業前)、1時間のVDT作業終了直後、点眼5分後,点眼15分後および30分後におけるピント調節力を、ピント調節力測定器(アコモドメーター AR3−SV14型[ニデック社製])を用いて、ステップ応答の方法で測定した。その結果、図1に示すように、本発明の点眼剤は、対照検体と比較して、ピント調節改善率(調節力の回復率)の高いことがわかった。
【0020】
計算式
ピント調節改善率(%)=(VDT作業後のピント調節時間−点眼後のピント調節時間)×100/(VDT作業後のピント調節時間−VDT作業前のピント調節時間)
【0021】
試験例2
検体として本発明の実施例1の点眼剤、対照検体として比較例1の点眼剤を用いた。
【0022】
健常人のボランティア10名に対して、眼精疲労を1時間のVDT作業(足し算作業)により惹起させた。次いで各人に対して、VDT作業終了直後に1回、点眼液を0.1mlずつ両眼に点眼し、疲労惹起前(VDT作業前)、1時間のVDT作業終了直後、点眼5分後,点眼15分後および30分後における眼精疲労についての自覚症状を0(全く感じない)〜10(非常に疲労を感じる)のスコアで自己判定した。その結果、図2に示すように、本発明の点眼液(実施例1)は、比較例1の点眼液と比較して、自覚症状改善率の高いことがわかった。
【0023】
計算式
自覚症状改善率(%)=(VDT作業後の自覚症状スコア−点眼後の自覚症状スコア)×100/(VDT作業後の自覚症状スコア−VDT作業前の自覚症状スコア)
【図面の簡単な説明】
【図1】検体として実施例1および対照検体として比較例1で調製した点眼剤のピント調節改善率(調節力の回復率)を示すもので、横軸は時間、縦軸はピント調節改善率(%)を示す。
【図2】検体として実施例1および対照検体として比較例1で調製した点眼剤の眼精疲労の自覚症状改善率を表すもので、横軸は時間、縦軸は眼精疲労の自覚症状改善率(%)を示す。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to eye drops for the purpose of improving eye strain.
[0002]
[Prior art]
Eye drops containing neostigmine methyl sulfate and vitamin B12 are used for recovery from eye strain caused by overuse or mental tension in visual display terminal (VDT) work, reading, gaze work, observation work, etc. It has been.
[0003]
Caffeine has an arousal action and is widely used as an internal solution, and as an eye drop, it has been studied as a drug solubilizing agent, but no study has been made on improving eye strain.
[0004]
[Problems to be solved by the invention]
An object of the present invention is to provide an eye drop having a high effect of improving eye strain caused by overuse of eyes or mental tension.
[0005]
[Means for Solving the Problems]
As a result of diligent research, the present inventors have found that an eye drop containing caffeine as an active ingredient can improve eye strain, and completed the present invention. In addition, the present invention has found that an ophthalmic solution combined with caffeine and menthol or taurine is very effective in improving eye strain, and has completed the present invention.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
In this invention, the compounding quantity of caffeine is 0.01 to 1.0 weight%, Preferably it is 0.1 to 0.5 weight%, More preferably, it is 0.1 to 0.15 weight%.
[0007]
Further, an eye drop in which caffeine is combined with menthol or taurine has a very high effect on improving eye strain. The blending amount of menthol is 0.005 to 0.1% by weight, preferably 0.01 to 0.05% by weight. The amount of taurine is 0.1 to 3.0% by weight, preferably 0.2 to 1.0% by weight. The pH and osmotic pressure are preferably in a range that does not irritate eyes that are causing eye strain. The pH is 5.0 to 8.0, preferably 6.5 to 7.5. The osmotic pressure is 250 to 450 mOsm, preferably 260 to 360 mOsm.
[0008]
In the eye drop of the present invention, caffeine, caffeine and menthol or taurine are added, an inorganic salt is dissolved in sterilized purified water in an amount of osmotic pressure of 250 to 450 mOsm, and the pH is adjusted with a pH regulator such as borax. It can be prepared by adjusting to 5.0 to 8.0.
[0009]
The eye drop of the present invention includes an anti-inflammatory agent (dipotassium glycyrrhizinate, epsilon aminocaproic acid, allantoin, berberine chloride, berberine sulfate, sodium azulenesulfonate, zinc sulfate, zinc lactate, lysozyme chloride, etc.), if necessary. Vitamins (vitamin B2, vitamin B6, vitamin B12, panthenol, calcium pantothenate, sodium pantothenate, vitamin A acetate, etc.), amino acids (magnesium potassium L-aspartate, potassium L-aspartate, magnesium L-aspartate) , Sodium chondroitin sulfate), preservatives (benzalkonium chloride, chlorobutanol, etc.), buffers (citric acid, boric acid, etc.), pH regulators (borax, etc.), isotonic agents (sodium chloride, etc.), Solubilizing agent (poly Oxyethylene hydrogenated castor oil, polyoxyethylene sorbitan monooleate, etc.) can be blended within a range that does not impair the effects of the present invention.
[0010]
【The invention's effect】
According to the present invention, it is possible to provide an eye drop having a high effect of improving eye strain caused by overuse of eyes or mental tension.
[0011]
【Example】
Hereinafter, the present invention will be described in more detail with reference to Examples and Test Examples.
[0012]
Example 1
100 mg of caffeine, 740 mg of sodium chloride, and 80 mg of potassium chloride were dissolved in 90 ml of sterilized purified water, adjusted to pH 7.4 with borax, and then sterilized purified water was added to make the total volume to 100 ml to prepare an eye drop. As a result of measurement, the osmotic pressure of this eye drop was 286 mOsm.
[0013]
Example 2
Caffeine 100 mg, menthol 10 mg, sodium chloride 740 mg, and potassium chloride 80 mg were dissolved in 90 ml of sterilized purified water, adjusted to pH 7.4 with borax, and then sterilized purified water was added to make the total amount to 100 ml to prepare an eye drop. As a result of measurement, the osmotic pressure of this eye drop was 287 mOsm.
[0014]
Example 3
100 mg of caffeine, 1000 mg of taurine, 500 mg of sodium chloride, and 100 mg of potassium chloride were dissolved in 90 ml of sterilized purified water, pH was adjusted to 7.4 with borax, and then sterilized purified water was added to make the total volume to 100 ml to prepare eye drops. As a result of the measurement, the osmotic pressure of this eye drop was 288 mOsm.
[0015]
Example 4
Dissolve 100 mg of caffeine, 10 mg of menthol, 1000 mg of taurine, 500 mg of sodium chloride and 100 mg of potassium chloride in 90 ml of sterile purified water, adjust the pH to 7.4 with borax, add sterile purified water to make the total volume 100 ml, Prepared. As a result of the measurement, the osmotic pressure of this eye drop was 290 mOsm.
[0016]
Example 5
Dissolve 500 mg of caffeine, 10 mg of menthol, 1000 mg of taurine, 500 mg of sodium chloride and 100 mg of potassium chloride in 90 ml of sterile purified water, adjust the pH to 7.4 with borax, add sterile purified water to make the total volume 100 ml, Prepared. As a result of measurement, the osmotic pressure of this eye drop was 303 mOsm.
[0017]
Comparative Example 1
Sodium chloride (750 mg) and potassium chloride (90 mg) were dissolved in sterilized purified water (90 ml), pH was adjusted to 7.4 with borax, and sterilized purified water was added to make the total amount to 100 ml. As a result of measurement, the osmotic pressure of this eye drop was 286 mOsm.
[0018]
Test example 1
The eye drop of Example 1 of the present invention was used as a specimen, and the eye drop of Comparative Example 1 was used as a control specimen.
[0019]
Eye fatigue was induced by 10 hours of VDT work (addition work) for 10 healthy people. Next, each patient was instilled with 0.1 ml of each eye drop once immediately after the VDT work was completed, before fatigue was induced (before the VDT work), immediately after the VDT work for 1 hour, and 5 minutes after the eye drop. The focus adjusting power at 15 minutes and 30 minutes after instillation was measured by a step response method using a focus adjusting power measuring device (Accomodometer AR3-SV14 [manufactured by NIDEK)]. As a result, as shown in FIG. 1, it was found that the eye drop of the present invention had a higher focus adjustment improvement rate (recovery rate of adjustment power) than the control sample.
[0020]
Calculation formula Focus adjustment improvement rate (%) = (Focus adjustment time after VDT work-Focus adjustment time after instillation) x 100 / (Focus adjustment time after VDT work-Focus adjustment time before VDT work)
[0021]
Test example 2
The eye drop of Example 1 of the present invention was used as a specimen, and the eye drop of Comparative Example 1 was used as a control specimen.
[0022]
Eye fatigue was induced by 10 hours of VDT work (addition work) for 10 healthy volunteers. Next, each patient was instilled with 0.1 ml of ophthalmic solution once at the end of the VDT work, before inducing fatigue (before the VDT work), immediately after the VDT work for 1 hour, and 5 minutes after the instillation. The subjective symptoms of eye strain after 15 minutes and 30 minutes were self-determined with a score of 0 (not felt at all) to 10 (feels very tired). As a result, as shown in FIG. 2, it was found that the ophthalmic solution of the present invention (Example 1) had a higher subjective symptom improvement rate than the ophthalmic solution of Comparative Example 1.
[0023]
Calculated subjective symptom improvement rate (%) = (Subjective symptom score after VDT work-subjective symptom score after instillation) x 100 / (Subjective symptom score after VDT work-subjective symptom score before VDT work)
[Brief description of the drawings]
FIG. 1 shows the focus adjustment improvement rate (recovery rate of adjustment power) of eye drops prepared in Example 1 as a sample and Comparative Example 1 as a control sample. The horizontal axis represents time, and the vertical axis represents the focus adjustment improvement rate. (%).
[2] represents the symptoms improvement of eye fatigue eye drops prepared in Comparative Example 1 as in Example 1 and the control sample as a sample, the horizontal axis represents time and the vertical axis improves symptoms of eyestrain The rate (%) is shown.

Claims (5)

カフェインを有効成分として配合するピント調節力改善用点眼剤。An eye drop for improving the focus adjustment power , containing caffeine as an active ingredient. カフェインを0.01〜1.00重量%含有し、pHが5.0〜8.0でかつ浸透圧が250〜450mOsmである請求項1記載のピント調節力改善用点眼剤。The eye drop for improving the focus adjustment power according to claim 1, comprising 0.01 to 1.00% by weight of caffeine, having a pH of 5.0 to 8.0 and an osmotic pressure of 250 to 450 mOsm. メントール又はタウリンを配合する請求項1記載のピント調節力改善用点眼剤。The ophthalmic solution for improving focus adjustment power according to claim 1, wherein menthol or taurine is blended. メントールを0.005〜0.10重量%含有する請求項1記載のピント調節力改善用点眼剤。The ophthalmic solution for improving focus adjustment power according to claim 1, comprising 0.005 to 0.10% by weight of menthol. タウリンを0.1〜3.0重量%含有する請求項1記載のピント調節力改善用点眼剤。The eye drop for improving the focus adjustment power according to claim 1, comprising 0.1 to 3.0% by weight of taurine.
JP36931099A 1998-12-28 1999-12-27 Eye drops for improving eye strain Expired - Lifetime JP4591728B2 (en)

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JPH0225421A (en) * 1988-05-31 1990-01-26 Iorab Corp Treatment of glaucoma using phosphodiesterase inhibitor
WO1996019211A1 (en) * 1994-12-19 1996-06-27 Taisho Pharmaceutical Co., Ltd. Liposome eye drops
JPH0940549A (en) * 1995-07-27 1997-02-10 Taisho Pharmaceut Co Ltd Asthenopia-improving eye lotion

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107028973A (en) * 2017-05-12 2017-08-11 浙江工贸职业技术学院 Eye drops for relieving asthenopia and preparation method thereof
CN107028973B (en) * 2017-05-12 2020-11-24 浙江工贸职业技术学院 Eye drops for relieving asthenopia and preparation method thereof

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