[fusion_builder_container admin_label=”Separator” hundred_percent=”no” hundred_percent_height=”no” hundred_percent_height_scroll=”no” hundred_percent_height_center_content=”yes” equal_height_columns=”no” menu_anchor=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”border-color-primary” id=”” background_color=”” background_image=”” background_position=”center center” background_repeat=”no-repeat” fade=”no” background_parallax=”none” enable_mobile=”no” parallax_speed=”0.3″ video_mp4=”” video_webm=”” video_ogv=”” video_url=”” video_aspect_ratio=”16:9″ video_loop=”yes” video_mute=”yes” video_preview_image=”” border_size=”” border_color=”” border_style=”solid” margin_top=”” margin_bottom=”” padding_top=”” padding_right=”” padding_bottom=”” padding_left=”” admin_toggled=”yes”][fusion_builder_row][fusion_builder_column type=”1_1″ layout=”1_1″ spacing=”” center_content=”no” link=”” target=”_self” min_height=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” background_color=”” background_image=”” background_position=”left top” background_repeat=”no-repeat” hover_type=”none” border_size=”0″ border_color=”” border_style=”solid” border_position=”all” padding_top=”” padding_right=”” padding_bottom=”” padding_left=”” dimension_margin=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=”” last=”no”][fusion_section_separator divider_type=”triangle” divider_position=”center” divider_candy=”bottom” icon=”” icon_color=”” bordersize=”0″ bordercolor=”#40c4ff” backgroundcolor=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” /][/fusion_builder_column][/fusion_builder_row][/fusion_builder_container][fusion_builder_container hundred_percent=”no” hundred_percent_height=”no” hundred_percent_height_scroll=”no” hundred_percent_height_center_content=”yes” equal_height_columns=”no” menu_anchor=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” background_color=”” background_image=”” background_position=”center center” background_repeat=”no-repeat” fade=”no” background_parallax=”none” enable_mobile=”no” parallax_speed=”0.3″ video_mp4=”” video_webm=”” video_ogv=”” video_url=”” video_aspect_ratio=”16:9″ video_loop=”yes” video_mute=”yes” video_preview_image=”” border_size=”” border_color=”” border_style=”solid” margin_top=”40px” margin_bottom=”” padding_top=”” padding_right=”” padding_bottom=”” padding_left=””][fusion_builder_row][fusion_builder_column type=”1_1″ layout=”1_1″ spacing=”” center_content=”no” link=”” target=”_self” min_height=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” background_color=”” background_image=”” background_position=”left top” background_repeat=”no-repeat” hover_type=”none” border_size=”0″ border_color=”” border_style=”solid” border_position=”all” padding_top=”” padding_right=”” padding_bottom=”” padding_left=”” dimension_margin=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=”” last=”no”][fusion_tabs design=”classic” layout=”horizontal” justified=”yes” backgroundcolor=”” inactivecolor=”” bordercolor=”” icon=”” icon_position=”” icon_size=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=””][fusion_tab title=”Myopia” icon=””]

WHAT IS IT?

Myopia (short-sightedness) is a malformation of the eye caused by its stretching or an abnormal curvature of the cornea. It creates difficulty in focusing on objects at distance and, in the case of retinal change, such visual difficulty may also affect objects at close range. Myopia may be congenital or acquired. Congenital myopia is caused by hereditary factors and occurs early in adolescence, while acquired myopia after occurs mainly after adolescence as a result of multiple environmental, physiological and postural factors.

HOW TO CORRECT IT

It is imperative to correct myopia right from the early onset of its symptoms (e.g. difficulty in focusing on road signs, recognizing people in the street or tending to squint in order to improve vision from a distance), accustoming the eye to sharp and arresting vision and, consequently, its development. Myopia can be corrected with the aid of negative (diverging) lenses able to divert the image on the retina and, therefore, produce good distance vision. Usually, the higher the myopia value the thicker at the edges and heavier the lenses. DAI OPTICAL is able to offer customized and cutting edge solutions, capable of reducing lens weight and thickness, safeguarding both optical quality and aesthetics.

[/fusion_tab][fusion_tab title=”Hyperopia” icon=””]

WHAT IS IT?

Hyperopia (long-sightedness) is caused by the shortening of the eye or the cornea and by insufficiently curved lenses. This causes difficulty in focusing perfectly on images from infinity as light beams converge, positioning themselves behind the retina. Hyperopia may be latent (especially in young patients) offset by accommodative power. Such accommodative power decreases with increasing age, causing disturbances in near vision, resulting in cases of elevated Hyperopia and in both disorders in distance and near vision.

HOW TO CORRECT IT

Hyperopia causes headaches and fatigue with near vision is corrected with the use of positive (converging) lenses able to re-stabilize the images on the retina. The higher the hyperopia values, the thicker at the centre and heavier the lenses. DAI OPTICAL is able to offer highly advanced technological products to suit every need with the expertise and professionalism that have always characterised our range.

[/fusion_tab][fusion_tab title=”Astigmatism” icon=””]

WHAT IS IT?

Astigmatism occurs when the retinal image is not in focus on the retina in the same way in different directions (meridians). This is due to the vertical curvature of the cornea being different in the various meridians. Imagine a cornea as the shape of a rugby ball rather than a football, which has two focal points on the retina instead of one since the eye is not spherical. The distance between these points represents the level of astigmatism. This defect can occur in both hyperopic and myopic subjects and needs to be corrected from the very first symptom in order not to affect 10/10 visual accuracy.

HOW TO CORRECT IT

Astigmatism presents itself through blurry vision both at distance and close up and through the lack of perception of contrasts between horizontal and vertical lines (for example, when the edges of objects appear as undefined, straight lines appear curved etc.). This visual defect is compensated with the use of cylindrical lenses that correct the curvature of the cornea by returning objects to their right size. DAI OPTICAL is able to offer customized solutions safeguarding both optical quality and aesthetics.

SOLUTIONS
Astigmatism can occur with an emmetropic and ametropic meridian, one short-sighted and the other longsighted or both short-sighted or longsighted. Products presented for myopia and hyperopia should therefore be consulted.

[/fusion_tab][fusion_tab title=”Presbyopia” icon=””]

WHAT IS IT?

Presbyopia is the gradual lack of elasticity of the crystalline lens that increases approaching 40-45 years of age causing difficulty in near vision. Under normal conditions the contraction of the ciliary muscle causes the lens to focus on objects at various distances while advancing age reduces its elasticity, losing its accommodative function. At an early stage the patient can remedy the condition by moving closer or further away from the object yet optical aids such as progressive lenses will eventually be required.

HOW TO CORRECT IT

Presbyopia is manifested in the lack of focus on objects close up (e.g. holding the newspaper further away would provide a temporary remedy) which may be associated with the lack of clear vision from afar. Many solutions exist ranging from the use of bifocal glasses for reading, yet undoubtedly the best solution in order to maximize comfort and convenience is the use of progressive lenses. They are composed of two functional zones, allowing for both a perfect view at distance as well as of objects placed at close distance, joined by a transitional zone known as the progression corridor. This allows for high-quality vision at intermediate distances with the aid of only one pair of glasses. DAI OPTICAL is able to offer solutions with customized progressive lenses where the lens adapts to the visual defect of the patient rather than the other way round.[/fusion_tab][fusion_tab title=”Ocular Protection” icon=””]

The importance of eye protection

Eye protection is, for a variety of reasons, taking on an increasingly important role in the life of each and every one of us. Ocular structures are exposed to a greater amount of radiation than ever before. In addition, increasing life expectancy has placed further attention on retinal diseases such as macular degeneration, retinitis pigmentosa or cataracts, a disease that has significantly lowered the age of onset. Understanding the mechanisms which may cause the most significant damage to ocular structures as well as the etiology of major retinal diseases has therefore become essential for experts in the field of ophthalmology, especially those involved with ocular protection and, above all, the innovative sector related to the field of medical lenses.

Some diseases managed through the medical benefits of lenses

Every time photons are absorbed by atoms or molecules they act as particles of pure energy. Ultraviolet photons are partially shielded and absorbed by the cornea, conjunctiva and lens and also partly reach the retina. Photons with longer wavelengths and higher energy reaching the retina are perceived as violet and, with decreasing energy, the violet fades to blue. It is this blue/violet element of sunlight that is extremely dangerous to the retina (age-related macular degeneration or AMD).

Retinitis pigmentosa (RP) is a progressive degeneration that depends on a metabolic nutritional disorder in the epithelium where photoreceptors are no longer fed and thus decay. The functioning of rod cells is initially altered and vision at dusk and at night is difficult leading to night blindness. In addition, the visual field is typically reduced further and further from the edge towards the centre until leaving a central residue, tubular in form with obvious problems for orientation. Another symptom is the reduced functioning of cones: this arises from a reduced visual acuteness, impaired colour vision, reduced contrast sensitivity and increased glare sensitivity.

Colour blindness is blindness towards colours in which the function of the cones is completely lost: patients affected have no sense of colour and can only distinguish difference in luminance. Often this also involves nystagmus. Glare sensitivity is very high and, in general, visual acuteness is extremely low: the glare is due to the over-exposure of the rods.

Diabetic retinopathy mainly affects the middle and inner layers of the retina where the neural connections introduce visual contrast. This leads to impaired contrast sensitivity. Patients with advanced-stage diabetic retinopathy are especially susceptible to significant glare and adaptation to different lighting conditions.

Transmittance tending towards zero below wavelengths from 390 nm to 500 nm.

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